יום שבת, 26 בינואר 2008

Gelufuction Process


Gelation of proteins is important to give food products, such as yoghurt-desserts, desirable textures. On an industrial scale, gelation is often induced by heating the final product. This has three main disadvantages. Firstly, sub-optimal uses of protein-ingredients since not all proteins (usually between 50 and 80 per cent) form aggregates that contribute to the gel strength. Secondly, the final texture is hard to predict and control and finally, delicate flavours are heated and sometimes destroyed. The cold gelation method that is based on separating the protein aggregation (heat) and gelation steps that are intertwined in traditional heat-set gels.

Moshik cookingChef:

Molecular khniocy- clicks on video icon.

וידיאו במטבח החדש/ השף מושיק

Chef: Jonnie Bour

Molecular Gastronomy- click on video icon

Aggregation is induced in a pre-heating step that makes it possible to fully denature the protein ingredient before gelation sets in. This ensures that all of the protein - more than 95 per cent - contributes to the gel. Gradual acidification of the solution of aggregates to form a gel at ambient temperature comprises the second step of the cold gelation method. A large part of the research has focused on the relations between the properties of the protein-aggregates and the mechanical properties of the gels. One important conclusion, , that allow formation of disulphide bonds during the second acidification step, is of crucial importance for the final gel hardness. Finally, heat-sensitive flavour compounds can now be added to a solution that does not require additional heating to form product in which the final gel properties can be precisely controlled. Food manufacturers can use the cold gelation method for dairy products such as yoghurt desserts, or processed fish such as surimi, and for the encapsulation of probiotics.

PH-Induced cold gelatin of whey proteins is a two-step process. After protein aggregates have been prepared by heat treatment, gelatin is established at ambient temperature by gradually lowering the pH. To demonstrate the importance of electrostatic interactions between aggregates during this latter process; -lacto globulin aggregates with a decreased is-electric point were prepared via succinylation of primary amino groups. The kinetics of pH-induced gelatin was affected significantly, with the pH gelatin curves shifting to lower pH after succinylation. With increasing modification, the pH of gelatin decreased to about 2.5. In contrast, unmodified aggregates gel around pH 5. Increasing the is-electric point of -lacto globulin via methylation of carboxylic acid groups resulted in gelatin at more alkaline pH values. Comparable results were obtained with whey protein isolate. At low pH disulfide cross-links between modified aggregates were not formed after gelatin and the gels displayed both syneresis and spontaneous gel fracture, in this way resembling the morphology of previously characterized thiol-blocked whey protein isolate gels Our results clearly demonstrate the importance of the net electric charge of the aggregates during pH-induced gelatin. In addition, the absence of disulfide bond formation between aggregates during low-pH gelatin was demonstrated with the modified aggregates. Keywords: -lacto globulin; whey protein isolate; chemical modification; aggregation/gelatin; electrostatic interactions; disulfide bonds

The mechanism of pectin gelatin depends on the degree of methoxylation. High methoxyl pectin gels due to hydrophobic interactions and hydrogen bonding between pectin molecules. Low methoxyl pectin forms gels in the presence of di- and polyvalent cations which cross link and neutralise the negative charges of the pectin molecule. Monovalent cations normally do not lead to gel formation with high methoxyl pectin solutions free of divalent cations, especially Ca. The present study found that alkali (NaOH or KOH) added to high methoxyl pectin leads to gel formation in a concentration-depended manner. It was also found that monovalent cations (Na and K) induce gelation of low methoxyl pectin and the time required for gel formation (setting time) depends on the cation concentration. The results indicate that a combined charge neutralisation and ionic strength effect is responsible for the monovalent cation-induced gelation of pectin.

This investigated the effect of a number of commercial-grade ingredients, either polysaccharides (wheat starch, corn starch and dextrin's) or with high protein content (gluten and dried egg), on the viscous and dynamic viscoelastic behaviour of a batter containing methylcellulose (MC) employed in a process that does not require a pre-frying step. Replacing part of the wheat flour present in a reference batter formula with either gluten or dried egg yielded an increase in the actual concentration of protein material, which resulted in batters that exhibited more marked shear-thinning behaviour at 15 °C. Conversely, the consistency of batters dropped when wheat flour was partially replaced with either wheat starch or modified corn starch, probably due to the ‘dilution’ effect of the polysaccharidic material on the wheat flour proteins which, in practice, form the network responsible for viscosity development in the batters studied at 15 °C.

A similar approach is used to explain the dynamic viscoelastic results at 15 °C. The storage and loss module both increased upon adding protein ingredients but decreased when some of the polysaccharide ingredients partially replaced the wheat flour. However, at 60 °C the opposite tendency was observed, since both viscoelastic module decreased in protein-enriched batters as a consequence of the disruption of starch gelatinization. On the other hand, both storage and loss module were observed to be higher in batters where wheat flour was partially replaced by native wheat starch or corn starch, which were already beginning to gelatinize at 60 °C.

The characteristic gelling pattern of MC, which is the key component to avoid the pre-frying step, was practically unaffected by the ingredients studied.

Finally, the thermo reversibility of the gelation process after a sudden increase in temperature up to 45, 60 or 80 °C, was progressively less evident as the final temperature increased. This is attributed to the fact that gelatinized starch reinforced the batter structure to a greater degree as the temperature was raised.

יום שני, 21 בינואר 2008

A Yang Chef succed at Frcenh three ASTRS


Culinary Arts is dedicated to the meaningful learning and excellent teaching that enables the cook's to achieve their full potential in cooking, dietetics and food service industries. On long term goal is to empower cook's to become leading partners in a dynamic prosperous community.

"Cooking is a new adventure every day. It's all about passion. You can teach people to cook, but you can't teach passion," he advised. "Put yourself into every dish you make."

To day the Culinary Institute's use the most modern equipment and proven teaching methods are two important elements of our primary goal: To provide the finest culinary education available to those seeking a career in Culinary Arts.

The application process for admission is a process the Culinary Institute is very proud of, as it guarantees the selection of only the best applicants for admission. Due to the cyclical nature of the industry.

What projects do you have on? Many. Probably the most exciting thing I’m doing right now is. Continuator aimed at of the French three ASTRE cook Jean-Georges Small of the French top restaurant L'Amsbourg in Baerenthal Elzas.Chef Moshik Roth, the owner of ASTRE Restaurant t Brouwerskolkje in Overveen in Nederland. He considers them selves on the future. Which confirm especially confessed state in our country for its knowledge of the molecular kitchen? Moshik and Jean Georges are good friends Moshik are find regular in the kitchen of small in Baerenthal. On his free days two times per month. Jean considers me as a continuator, Jean say he is my culinary father, I learn as lot of him. Moshik: My cooperation with Jean-Georges small is none secret more. I come there now already a year regularly concerning the floor.Moshik feel themselves gaveled that small him sees as aimed at a continuator. Provisionally he remains in the Netherlands. When it an adoption or very far-reaching cooperation reaches, we let us be according to Moshik years further. Culinary Institute is part of the Career Education Corporation network. Career Education Corporation is pleased to make placement assistance available for our graduates and alumni. With global access to candidates and job opportunities from our domestic and international sites, the culinary located on many of our campuses and can aid in securing employment that is both exciting and rewarding.

A cook work along with their Admissions Representative to determine which start date would be optimal for the cook. Although there is no set deadline for submitting application, The Culinary Institute does limit its enrollment, so you are advised to apply as early as possible to ensure full consideration.

.

Moshik philosophy idea: Well, the concerns are different in each of them, but the objective in all of them is to achieve a comfort level between the cook/artist/performer and the customer/viewer/diner. And if we can achieve that, and the customers are happy and the cooks are happy, then we have a great experience. But if neither of the two parties are happy, then you have a closed restaurant. And if only one of the two groups is happy, you have one that will close. So, to create an opportunity for both the customers and the staff to have a superior experience is my constant struggle.

Moshik think people overestimate that. What I’m doing is taking a lot of the local ingredients we have available in Holland. I’m just using them in different ways than chefs are using them. My basic cousin is depending on Molecular Gastronomy. I have chosen a more populist vernacular. I think Mediterranean/French food is easier to like and love and less intimidating than most. So people overestimate my contribution, not in a bad way or a good way. It’s just that my food is simpler than a lot of other chefs’ food, and that makes it more accessible, and possibly easier to eat.

The ideas come from classic cooking, or any European culture, for that matter. As far as something like the offal menu, Europeans would definitely not throw anything away, and the use of the head or the liver or the kidneys is part of their quotidian experience. People were ready for it; they were tired of eating things they could easily make at home. When I go out to a restaurant I definitely order dishes that I know take either a long time to make or are difficult to source. Unless it’s a really special steak, there’s no reason for me to go out and eat that.

Dues the nature food changed in the last decade? Yes, for good or for bad, even the most classic Restaurants have been introducing non-traditional ingredients. And in some cases that’s good, because there should be no fear of new ingredients, and things can be redone or rediscovered in a better way. So they’re reinventing to avoid palate exhaustion. Chefs feel that to be fascinating and fun, they need to bring in new things. They’re looking to challenge their customers. I don’t have a problem with change.

I would like to think that. At this point in my career it’s very hard for me to turn down opportunities that I think are auspicious. I like things that are fun and I look to do them a lot, and that I have the opportunities to do them makes me a lucky guy. So, as busy as my schedule looks, I don’t ever wake up and say “Oh, crap, I got to do that.” I’m lucky that it’s worked out that way. But it is busy!

Produce---vegetables---are the most exciting thing to me. The constant evolution of the greenmarket-chef relationship is something that makes it very exciting to work in a restaurant kitchen and see what comes through.

יום חמישי, 3 בינואר 2008

The Future of Food


It seems the Technology process show that never dies. Forty years ago a group of science and was coined by Hungarian physicistNicholas Kurti

and French chemist Herve This

Celebration with a group of France chefs, and shows as the bilging of Innovation cousin. From outside it looks different and like science fiction.

It was definitely not a 40-year virgin; Science spending most of the time they professional and career and running through more modern interpretation to the New cousin." But much of the production remains seam like before. Information revealed through the practice of molecular gastronomy research can be applied by cooks to improve their cooking. What was built the test aspects of general relativity? Libratory Test soars from Science show a News Reference and provided by Find solution and calculated with the new cousin.

In the begging of the process was going some difficulty, Condition and Performance of the Interstate System from scientific point of view of the sciences. Molecular gastronomy is a scientific discipline involving the study of physical & chemical processes that occur in cooking. Attempts to explain them and investigates the social, artistic and technical components of Culinary- Gastronomy phenomena in general.

Many chefs around the world say: After 40 years of moving forward, it's a possible now going back. They are happy to cock topic of molecular gastronomy and participate the trend generally defined: The Application of scientific techniques and tools to cooking. In anther said is wide ranging a little mysterious. On the one hand, it’s about stuff that happens in the back of the house: the chemical powders and lab equipment that chefs use to create new tastes and textures. But it’s also about what diners see, and how they interact with the food: the surrealistic plating and surprising presentation, the trompe l’oeil food that looks like other food, the morsels served on wires, the flavors added tableside from test tubes. To day we cane see By the Numbers: How Higher Education Has Changed in 40 Years. Higher Opinion Education Faces New Challenges. The Innovation cousin covers a wide range of topics in detail, as we might expect, the explanations can sometimes become quite technical. And so far have been very clear and concise. And relatable to my own cooking. Hopefully this process will help to ever chef become a better cook. After all who can question your cooking technique when it’s been scientifically proven to work?

video

The science helps chefs around the world really sizzle Contributor to The Christian Science Monitor. In Innovation cousin you mast following the recipe meticulously, and using the finest ingredients. We realized there was a growing gap between food science and home cooking. The term molecular gastronomy both interested in food science, they felt that empirical knowledge and tradition were as important in cooking as rational understanding. I mast to say that Definitely don't have a exhaustive list of all molecular gastronomy, but hopefully enough information to get someone caught up on this cutting-edge culinary trend.

Molecular Gastronomy looking to the future and imagines new cooking methods and propose novel dishes. Oslo amateur cooks and professional chefs and changed the way food is approached and prepared all over the world.

Chefs how practices with Molecular Gastronomy for them kitchen is just like a science laboratory and cooking is just another experimental science. Kitchen is full of apparatus - devices to heat and cool, tools to mix, cut and grind, and measure out ingredients - and materials that you react together. Every time you follow a recipe you are conducting an experiment. Interaction between the countries, will be followed by-

Things like these aides didn't come in the recipes and had to be improved before we were able to produce beautiful pearls. Scientific knowledge and way of thinking have certainly helped to get faster answers and solve the problems. Food looks to be more active than ever. Molecular Gastronomy”, however, is mostly improvised, much in the same way as beautiful music or a good art, and given the new set-up and a fresh approach it is a new generation of food. Chefs inspired by food technology fool around with the traditional structure of ingredients, freezing soups and turning them into sorbets, liquefying solids and then aerating them with gasses, serving savoury lollies and desserts made from soup vegetables. Molecular gastronomy hasn't really caught on in Nederland the way it has in Europe.

In Nederland loot of customers care about food and plenty of population would travel out of their way to eat a meal because it was interesting or challenging. Most people want yummy and they want good value.

During the mid-1990s, at El Bulli restaurant in Spain, Chef Ferran Adria

started introducing foams and apple caviars and hot jellied strips of "pasta" made from agar-agar. The cult of El Bulli began, and foams startedHeston Blumenthal

to appear on menus in France, the UK and the US. In 1998, British chef started working on dishes such as bacon-and-egg ice-cream at his Berkshire restaurant, The Fat Duck. In 2001, The British Good Food Guide declared Blumenthal chef of the year, and he was hired to write a cooking column for The Guardian. In 2001, the Michelin Guide declared El Bulli the best restaurant in the world.

יום שבת, 29 בדצמבר 2007

Food Emulsifier

Innovation in by emulsifier producers is good example of how ingredients producers can revive a mature market by catering to changing conditions and demands

Food is a complicated mixture of carbohydrate protein, oil and fat, water, and air, as well as a variety of other minute. Emulsifiers can help to make a food appealing. The example of the mayonnaise without the emulsifier shows how unappealing it would be if the oil and water.

Emulsifying of Oil in Water

There are two types of emulsions. An oil-in-water emulsion contains small droplets of oil that are dispersed in water. Alternatively, a water-in-oil emulsion has small droplets of water that are dispersed in oil. Usually the water and oil will not mix and the emulsifier, or emulsifying agent, keeps the mixture stable and prevents the oil and water from separating into two layers. Emulsifiers are among the most frequently used types of food additives. They are used for many reasons.

An emulsion is a dispersion of droplets of one immiscible liquid within another. Emulsifiers concentrate at the interface between immiscible liquids, where they form interfacial films. This is due to their hydrophilic/lipophilic structure. Emulsifiers allow for a stable and homogenous mixture of two liquids, which do not normally mix. Emulsifiers can be used for a variety of functions: Starch Complexing (Staling), Dough Strengthening, Crystal Modification, Aeration and Foam Stabilization.

Cotton Aric/ Textures Oil

Technique process

On the video clip we see the- Technique process cooking in Innovation cousin

Video clip- Gourmet whips coffee

Emulsifiers can help to make a food appealing. The example of the mayonnaise without the emulsifier shows how unappealing it would be if the oil and water separated before it was used. Emulsifiers have a big effect on the structure and texture of many foods. They are used to aid in the processing of foods and also to help maintain quality and freshness. In low fat spreads, emulsifiers can help to prevent the growth of moulds which would happen if the oil and fat separated. The table shows foods in which emulsifiers are most commonly used.

Emulsifiers are molecules that have two distinct ends. One end likes to be in water (hydrophilic) and the other end likes to be in oil (lipophilic). This means that they will coat the surface of oil droplets in an oil-in-water emulsion and effectively 'insulate' the oil droplets from the water. It keeps them evenly dispersed throughout the emulsion and stops them from clumping together to form their own, separate layer. In a water-in-oil emulsion, the emulsifier coats the water droplets to stop them from separating from the oil. This property makes emulsifiers indispensable in the modern food industry where foams, suspensions (particles of solid dispersed evenly through a liquid) and emulsions are often used. Milk is a natural emulsion. It is a mixture of fat droplets in water. Proteins in the milk help to coat the fat droplets and allow them to stay dispersed in the water of the milk.

Everything in the known universe about Molecular Gastronomy

Video- Molecular Gastronomy

Molecular gastronomy-Beetroot vapor by using lecithin

Video-Molecular Gastronomy

The most common type of emulsifiers used is lipids called Monoglycerides. These are produced by reacting fatty acids with glycerol. Most of the other emulsifiers are produced by the esterification of other materials, such as lactic acid with mono- and di-glycerides. Natural sources like vegetable oils and animal fats are often used to make emulsifiers. The most commonly used emulsifiers are lecithin. There are many other emulsifiers in use. Without the use of emulsifiers, many foods would be inedible.

An emulsifier is a molecule with one oil-friendly end and one water-friendly. In this way droplets of oil are surrounded by the emulsifier molecule, with the oil core hidden by the water-friendly tails of the emulsifier. A classic natural emulsion is milk, which is a complex mixture of fat suspended in an aqueous solution. Nature's emulsifiers are proteins and phospholipids (lipids means fat soluble phosphate is water soluble.). Egg is commonly used as an emulsifier the most frequently used raw materials for emulsifiers include palm oil, rapeseed oil, soy bean oil, sunflower oil or lard/tallow. Egg happens to be the oldest emulsifier. Basic emulsifier production involves combining oil (triglyceride) with glycerol that. Results in monoglyceride. The type of triglyceride used in the reaction determines the type of emulsifier obtained. Unsaturated triglycerides produce fluid products such as oil while saturated triglycerides result in pasty or solid structures like butter. Monoglycerides can be combined with other substances, such as citric acid and lactic acid, in order to increase their emulsifying properties. Emulsifiers are used in creams and sauces, bakery, and dairy products. They may be derived from the natural products or chemicals. Common emulsifiers are lecithins, mono- and di-glycerides of fatty acids esters of monoglycerides of fatty acids and phosphated monoglycerides.

Ingredients of ice cram

Chef Heston Blumenthal from Restaurant" Fat Duck" discusses the ingredients of ice cream and the pitfalls that can occur while making it – formation of lactose crystals, denaturing of egg proteins and formation of large ice crystals.

Flavor

The flavour molecules of chocolate are fat-soluble, while vanilla is water-soluble. Heston Blumenthal shows how to make chocolate and vanilla ice cream in which the chocolate flavour is released more slowly than the vanilla

Liquid Nitrogen Using liquid nitrogen as a coolant allows ice cream to be made in a Guinness world record time.

Blender technology has come a long way since the old Warring blades-in-a-jar concept. The mysterious Thermo mix, sold Tupperware-style at parties, can heat, weigh, juice, puree, stir, knead, you name it. Where the Thermo mix is designed to be an all-purpose device, its companion in many a hyper equipped kitchen, the Pacojet, is highly specialized: a potent blender designed to puree frozen fruits, meats or whatever into pure sorbets. Ferran Adria has developed "airs" to improve on his foams. These are created by whipping the surface of a thickened liquid using an immersion blender and then just scooping off the resulting froth.

Processed meat: Sausages dominate Europe’s processed meat industry. The main components of sausages are meat proteins, fat and water, which are bound together in a stable emulsion. Emulsifiers stabilize this emulsion and distribute the fat finely throughout the product. And in low-fat meat products, food additives are responsible for making them as pleasant as their full-fat counterparts. The food industry uses mono and diglycerides of fatty acids, and citric acid esters for manufacturing processed meat.

Legislation: Emulsifiers currently used in food production are either purified natural products or synthetic chemicals that have very similar structures to the natural products. Just like any other food additive, emulsifiers are subject to stringent EU legislation governing their safety assessment, authorization, use and labeling,.

יום רביעי, 26 בדצמבר 2007

Fpherification Technique


Spherification introduced by the greet Chef Ferran Adria from Spain in 2003 at elBulli.

Spherification is a spectacular cooking technique introduced, which enables us to prepare recipes that no-one had even imagined before. It consists of the controlled gelification of a liquid which, submerged in a bath, forms spheres. There are tow kinds:

Basic Spherification

Reverse Spherification

Spherification means exactly what it sounds like it means. It’s the process of taking liquid, which takes the shape of its container, and reshaping it into a sphere. The liquid is barely solidified on the outside, and left to be itself on the inside. The technique relies on a simple gelling reaction between calcium chloride and sodium alginate: enrich a tasty liquid with either calcium or alginate and then drop it with a squeeze bottle, syringe, spoon, or whatever else will get the job done, into a bath of either calcium or alginate. After a certain amount of time (the longer the time, the thicker the jelly-shell that develops) gently remove, rinse, and serve.

Basic Spherification: http://www.youtube.com/watch?v=9lcNupGGkkw&feature=related

Citras- Spherification: it's a product made from sodium citrate, obtained mainly from citrus; it is usually used in the food industry to prevent darkening of cut fruits and vegetables. It has the property of reducing the acidity of foods, and using it makes it possible to achieve spherical preparations with strongly acidic ingredients. Dissolves easily and acts instantaneously. Characteristics: Presented in a refined powder. Highly water soluble. One of Ferran Adria's Molecular Gastronomy gimmicks is Spherification, if you will (though Fire fox spell-check won’t) — in which a liquid “filling” containing a small amount of a brown seaweed derivative known as sodium alginate is dropped in to a bath of calcium chloride. The reaction between the sodium alginate and the calcium chloride forms a thin membrane around the filling, sealing it into a sphere. Sounds so simple, right? Only with practice.

Tools Spherification: Spherification is a new process that uses a very specific technique. For this reason, the tools used for this purpose have been subjected to numerous tests. The Eines pack contains the most useful tools for each step in spherification.
Once the desired shape and size are determined, the right tool must be chosen: Syringes are used to create drops that make spherical caviar. For larger preparations (mini-spheres, ravioli, gnocchi, balloons), Dosing Spoons must be used. Collecting Spoons are used to remove and wash the spherical preparation from the calcic bath.

Saying by Adria: “If we had never seen water before, we would be amazed…When you try a new product, you don’t know what it is, you have to experience It." behind thus aide inventions and discoveries may seem weird, they are merely unfamiliar.

The definition of Cuisine means that a diner is there to think. Not to chat about the day’s events, but to consider what we eating and to be. Amazed, and really

Concentrate on the dish in front of you. Therefore the food must be sufficiently thought provoking. Chef's how washer's to create new dishes must understand the history of a technique before they can build on it. If you want to be a foams.

The majority of the day the chef work hard, devoted and demonstrations, create a new dish's from his consumer's. The chef showed older techniques and unveiled some of the latest things he has been working on.

By the Year's past, the idea of F.Adria is affected acceleration around the world. Chef's embracing is idea with faked arms, they devoted and demonstration a new cousin. A good example is Restaurant-T' Brouwerskolkje.

The food straddles the line between traditional Mediterranean cuisine and hypermodern cooking, excellent master of food and specially, playing with combinations of taste and bite. He uses inventive techniques and wit, while still retaining familiarity. Demoed four dishes which highlighted his playfulness and need to have fun while he is cooking.

This is head of the Molecular Gastronomy Group in the Laboratory of Chemical Interactions at the College de France in Paris- http://www.inra.fr/la_science_et_vous/apprendre_experimenter/gastronomie_moleculaire

TEXTURAS- is a line of products to create a world of new preparations. The Emulsifiers product line initiated with LECITE. It allows the creation of airy, light textures. A new way of seasoning or bringing an elegant touch to finish a dish in a spectacular way. GLICE is obtained from glycerin and fatty acids. It's a product with high stability as an emulsifier. Similar to oil, it must be broken down with a fatty element and then added to the watery element. Characteristics: Indissoluble in water. It dissolves in oil at 60°C. The mixture of oil and GLICE in water must be integrated slowly. Ingredients Glice: 300 g Monoglyceride in flakes.

This futuristic food is about science and technology. The first is learning the chemistry of food and flavour so that new combinations and interpretations can be created. The second is bringing industrial and laboratory tools into the kitchen so that new forms of pleasure can be brought to the table.

http://video.aol.com/video-detail/cuisine-moleculaire/4014890154

They are many tricks with Spherification Technology do a new dies, bat

Although I'd probably never be able to do anything like this at home in my own Kitchen. To demonstrate crazy technique at list no to day. It is no surprise that home cooks are not rushing to try the Textures products, especially as they are currently only available in catering-size canisters. But that may change soon. This revolution is exciting. After all, these are the first new techniques in cooking for hundreds of years.

At the International Chefs Congress September- 2007 at New York City, Chef Jose Andres, Restaurant Atlantico Washington DC's fine Spanish chef, - presented his tribute to famous Spanish chef Ferran Adria the technique, examining the natural jelly inside a tomato and recreating it with the process of spherification. He presented the two, natural and fabricated, side by side.

The technique relies on a simple gelling reaction between calcium chloride and sodium alginate but experimentation with percentages of the chemicals in the liquid might be necessary if you're not following a recipe:

Step 1: Enrich a liquid with either calcium or alginate
Step 2: Drop it with a squeeze bottle, syringe, spoon, or whatever else will get the job done, into a bath of either calcium or alginate
Step 3: After a certain amount of time (the longer the time, the thicker the jelly-shell that develops) gently remove
Step 4: Rinse and serve.

יום ראשון, 23 בדצמבר 2007

Food Testur


Testing food products for texture-related qualities enables the food industry to develop new products and improve existing ones. The tenderness of peas and poultry as well as the crispness of potato chips and crunchiness of apples is subjects under investigation by many laboratories. The freshness of baked goods—bread, cookies, crackers—is important to consumers and may be objectively measured with food testing equipment. Many food firms are searching for the proper combination of crispness, crunchiness and chewiness to make their products successful. New packaging methods and antistalants promote longer shelf lives, and food technologists need to carefully measure the effects of such advancements.

http://es.arazone.net/ratatouille+podcast-cLiPeu-7olnY6Xs.html

Frozen fish, shrimp and other foods require careful processing and technologists are seeking optimal methods through testing of each alternative. Creams, gels and puddings must have the appropriate viscosity of flow properties that are measured in specialized fixtures on testing instruments.

Food technologists worldwide are using precision equipment to measure texture properties of food, including ripeness, chewiness, gumminess, brittleness, viscoelasticity, and tenderness. These properties can objectively characterize new foods that can be prepared quickly but taste like homemade to help food makers find success in the marketplace.

http://es.arazone.net/gordon+ramsay+fast-cLiPsrPSYZGhL98.html

Food texture analysis is measuring the properties related to how a food feels in your mouth. This can be done using a sensory panel—a group of people selected to taste food and provide feedback— or by instrumental methods. Compared with sensory panels, which are costly and time consuming, instrumental methods can save time, reduce costs, and provide more consistent, objective results. However, since it is difficult for machines to imitate biting and chewing, the need for sensory panels as a correlative test method will continue for the foreseeable future.

Texture is one of the most important attributes used by consumers to assess food quality. With its distinguished editor and international team of contributors, this authoritative book summarises the wealth of recent research on what influences texture in solid foods and how it can be controlled to maximize product quality.
Reviews research on the structure of semi-solid foods and its influence on texture, covering emulsion rheology, the behaviour of biopolymers and developments in measurement. Considers key aspects of product development and enhancement. It includes chapters on engineering emulsions and gels, and the use of emulsifiers and hydrocolloids. The final part of the book discusses improving the texture of particular products, with chapters on yoghurt, spreads, ice cream, sauces and dressings.

With its summary of key research trends and their practical implications in improving product quality, Texture in food Volume 1: semi-solid foods is a standard reference for the food industry. It is complemented by a second volume on the texture of solid foods.
The first part of the book reviews research on understanding how consumers experience texture when they eat, and how they perceive and describe key textural qualities such as crispness. Part 2 considers the instrumental techniques used for analyzing texture. It includes chapters on force/deformation and sound input techniques, near infrared spectroscopy (NIR), nuclear magnetic resonance (NMR) and magnetic resonance imaging (MRI). The final part examines how the texture of particular foods may be better understood and improved. A number of chapters review ways of controlling the texture of fruits and vegetables, including the role of plant structure and compounds, the handling of raw materials and technologies such as freezing and vacuum infusion. A final group of chapters discuss the texture of cereal foods, including bread, rice, pasta and fried food.

Food textures, a sensory attribute of food rarely discussed; it is an important topic for food manufacturers and restaurant operators. To sustain consumer acceptance, texture, along with flavor, aroma and appearance, has to please.

There are plenty of opportunities for food producers who choose to play around with food textures. Complex textures can add excitement and keep consumer boredom at bay, such as glazed nuts. Changing textures of conventional products can also expand a category, attracting new audiences, like tender jerky. Surprising and delightful textures will win consumer loyalty and drive sales if it is appealing enough.

As we all crave textures for emotional and physiological Looking at Food Textures, the November issue of the Culinary Trend Mapping Report, examines the ingredients, cooking styles and ethnic influences that the Center for Culinary Development has identified as about to hit, or have established themselves, in the U.S. We delve into the trends relating to salami (raw, cured meats), molecular gastronomy, sous vide cooking, refined artisan candies, crispy fruit and vegetable snacks, tender jerky and double crunchy glazed nuts and critically assess how food marketers can take advantage of these hot trends.

How important are crispness, crunchiness or spread ability to your products? Such characteristics and properties play an important role in attracting consumers to your product, getting them to try it again and making it a winner. The sooner we realize the roles that texture, rheology and mouthfeel play in making a food appealing to consumers, the sooner we'll create more appealing products.

We use texture as important criteria when determining a product's quality-whether it's fresh or not. When a food produces a hard, soft, crisp or moist feeling in the mouth, we find a basis for measuring its quality. Although organoleptic properties may be significant, they may be one of the least understood properties-often neglected by product developers.

When creating a new food product or redesigning an existing one, researchers need to pay close attention to textural as well as rheological properties. With this in mind Food Technology Intelligence, Inc., publisher of the international newsletter, Emerging Food R&D Report, has just revised its report analyzing technical advances aimed at improving food product texture and rheology. This report, Optimizing Food Texture and Rheology, gives you a first-hand look at new techniques and processes that will help you improve the mouthfeel and other characteristics of your products. For example, in its pages you'll learn that.

יום חמישי, 20 בדצמבר 2007

Shrimp and Prauns


Shrimps: is one of the most popular ingredients in seafood dishes, shrimp and prawns are enjoyed in many countries of the world.

Shrimp are small animals that live on the floor of oceans and lakes. There are over 2,000 different species of shrimp worldwide. Shrimp are-

Invertebrates

That has a tough exoskeleton. Shrimp range from a small fraction of a few mm to 23 cm long. These crustaceans have a thin, smooth, hard, and almost transparent exoskeleton. Shrimp vary widely in color; tropical varieties are often brightly colored. Shrimp have 5 pairs of jointed walking legs on the thorax, and they have 5 pairs of swimming legs (swimmerets) and 3 pairs of maxillae (feeding appendages) on the abdomen. The body, legs, swimmerets, and other appendages are segmented. Shrimp have two pairs of segmented sensory antennae, a tail fan, and compound eyes.

Shrimp are omnivores; they eat plants and small animals. The unusual pistol shrimp kills or stuns its prey by making a very loud sound with a huge claw with a moveable, snapping appendage. Female shrimp lay over a thousand eggs, which are attached to her swimming legs. The shrimp emerge as tiny, floating organisms, a component of

Zooplankton

The terms "prawn" and "scampi" are often used interchangeably with shrimp: "prawn" commonly refers to freshwater shrimp or large saltwater shrimp; "scampi" is often used by Restaurateurs to describe shrimp cooked in butter and garlic. All shrimp are divided into three basic categories: cold-water or northern; warm-water, tropical, or southern; and freshwater. Warm-water shrimp from the Gulf States represent the overwhelming majority of domestic shrimp landings. The three major species are brown, white, and pink shrimp.

Uncooked brown shrimp have reddish brown shells, and their meat has a stronger flavor than white or pink shrimp because of higher iodine content. As a result, brown shrimp are generally less expensive than the other two varieties. The premium-priced shrimp are white shrimp Penaeus setiferus. Although classified as white, the shells of some are actually greenish gray. Pink shrimp (Penaeus duorarum) come in a variety of colors, including brownish pink and lemon yellow.

There are two smaller categories of warm-water shrimp. Red shrimp and rock shrimp occur in Gulf of Mexico. The latter (Sicyonia brevirostris) is a fairly recent introduction into the American market. Rock shrimp gets its name from its hard shell. The meat of rock shrimp is very firm, more lobster- like, and lower priced than other shrimp.

The freshwater shrimp known as the Malaysian prawn, (Macrobrachium rosenbergii)

These shrimp are large and can reach a weight of-

Shrimp are in season from May to October. And 95% of the shrimp caught come from the warm waters of the South Atlantic and Gulf states.

Unless you live in the part of the country where you can actually buy "fresh" shrimp, it is preferable to buy frozen shrimp. Most shrimp in the grocery stores are frozen shrimp that has been thawed. The shelf like of thawed shrimp is only a couple of days, whereas shrimp stored in the freezer retain their quality for several weeks.

If possible, avoid shrimp that has been peeled and deveined before freezing. It can cause a loss of flavor and texture.

Defrost shrimp in the refrigerator or in cold water. Do not defrost in a warm place or microwave.

http://www.wildamericanshrimp.com/main.html Video

Recipes-Prawns/Shrimp

Ingredients:

1 kg large fresh prawns'
3 spoons olive oil
50 gm ginger, shredded

1 Chicken with 6 caps water

Ingredients from souse:

8 red chilies
15 shallots
10 cloves garlic
60 gm ginger
1 tsp turmeric powder
3 lemon grass bruised
5 kaffir lime leaves
1 cup water
2 cups coconut milk
salt and pepper to taste

Preparation:

Peel and slice the shallots or garlic finely, and dry well with a paper towel, Heat the oil and deep fry the shallots or garlic until golden brown and crisp. Take care not to let them burn or the flavour will be bitter. Drain and cool before storing.

Simmer the whole chicken in 6 cups water for 30 minutes

To make the spice paste, chop the shallots, garlic, candlenuts, ginger and turmeric, and put in a blender with just enough of the oil to keep the blades turning. Process until fine. Heat remaining oil in a heavy pan and sauté the blended paste together with remaining spice paste ingredients for 4-5 minutes, stirring frequently.

Put the cooked spice paste with the partially cooked chicken and simmer for another 20 minutes. Season soup to taste with salt and pepper. Remove the chicken from the stock, cut the bone meat into shreds, Strain stock and put back in the pan to reheat.

Divide the transparent noodles. Hard-boiled eggs, bean sprouts, celery leaves, and chicken among 6 large bowls. Add some sliced Lon tong if liked. Top with stock and sprinkle with fried shallots.

There are many ways in which you can cook shrimp and prawns and it is really a matter of preference or specification of a particular recipe Prawns and shrimps can be boiled, steamed, grilled, sautéed, baked or deep-fried and can be cooked with or without the shell, with the vein or deveined. If you have bought prawns or shrimp that have already been cooked, then they should be added a few minutes before the end of the specified cooking time, just to reheat them, as overcooking them will make them tough.

Shrimp pickled.

Ingredients

1 Kg large shrimp peeled, deveined and cooked
Juice two lemons
1 tablespoon chopped fresh garlic
1/2 cup finely chopped parsley
salt
black pepper
1/4 cup olive oil
1 table-spoon capers

Preparation
Garnish: lemon zest, lemon slices, chopped fresh parsley. Clean shrimp, if necessary, and poach until pink. Cool in ice. Drain shrimp from ice. In mixing bowl, whisk together lemon zest, juice, garlic, parsley, salt, pepper, olive oil and capers. Add the shrimp, toss to mix well. Refrigerate at least 1 hour before serving. Arrange shrimp in decorative design on platter. Garnish with lemon zest and parsley.