Principles Of Cooking And Food Preparation

Visão Geral

Cooking is not just applying fire to food. It is a piece of everyday science that decides whether a meal is safe to eat, easy to digest and a pleasure to swallow. The same pot of soup can come off the fire nourishing or ruined, and the difference is not luck. It is whether the cook understood what heat was doing to the food all along.

In this lesson you will learn the real reasons we cook at all, the three ways heat travels from a flame into your food, and what that heat does to protein, starch, sugar, fat and the delicate vitamins inside. You will meet the simple rules that separate a clean, economical kitchen from a wasteful one, and the small habits that let you serve a plate of vegetables that still carries the vitamins nature put there.

Objetivos

  1. Explain the reasons for cooking food
  2. Describe how heat is transferred by conduction, convection and radiation
  3. Explain the effect of heat on nutrients, colour, flavour and texture
  4. State the principles that guide the preparation of food
  5. Explain how to conserve nutrients during preparation and cooking

Nota de Aula

A young caterer in Ibadan boils a big pot of ugu leaves for half an hour to be sure they are soft, then pours the dark green water down the drain and serves the leaves proudly. They look cooked. What she does not see is that most of the vitamin C the ugu contained has been destroyed by the long heat and washed away in the water she threw out. She has cooked the food and cooked away its value at the same time. Cooking is the daily science every caterer practises, and a cook who understands why we cook, how heat reaches the food, and what heat does once it arrives will make meals that are safer, tastier and more nourishing than a cook who simply waits for the pot to boil. This lesson gives you that understanding.

Avaliação da Lição

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  1. Which of the following is NOT a reason for cooking food? A. To make it safe to eat B. To make it easier to digest C. To destroy all its vitamins D. To improve its flavour and appearance Answer: C
  2. Heat passing through the metal handle of a frying pan until it becomes too hot to hold is an example of: A. Convection B. Conduction C. Radiation D. Evaporation Answer: B
  3. The setting firm of egg white when it is heated is called: A. Gelatinisation B. Caramelisation C. Coagulation D. Fermentation Answer: C
  4. Which vitamins are most easily lost when vegetables are boiled in plenty of water and the water is thrown away? A. Vitamins A and D B. Vitamins B and C C. Vitamins D and E D. Vitamins A and K Answer: B
  5. Grilling suya over glowing charcoal cooks the meat mainly by: A. Conduction B. Convection C. Radiation D. Steaming Answer: C

Perguntas Anteriores

Pergunta-se como são as perguntas anteriores sobre este tópico? Aqui estão várias perguntas sobre Principles Of Cooking And Food Preparation de anos passados.

Pergunta 1 Relatório

(a) State four features of a good cake.

(b) State four defects that could occur in cakes.