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Four Ways to Cook with Heat

Food can be heated by hot water, by steam, by hot oil or by hot oven air, and each way changes its taste and texture differently. Water and steam stay around 100 °C, while oil and oven air get much hotter, which is why only they can make food brown and crispy.

In the picture

  1. Boiling: the food sits in water bubbling at about 100 °C
  2. Steaming: the food sits above the water and is cooked by rising steam
  3. Frying: hot oil at about 160–190 °C browns and crisps the outside
  4. Baking: hot, dry oven air surrounds the food and forms a golden crust

Examples

  • Boiling pasta in a large pot of salted water
  • Baking a cake or a pizza in the oven

Quiz: Four Ways to Cook with Heat (Age 13)

  1. Why does steaming keep more vitamins in vegetables than boiling does?

    • Steam is much hotter than boiling water
    • The food cooks for a much longer time
    • The food never touches the water
  2. Which two ways of cooking can make food turn brown and crispy?

    • Frying and baking
    • Steaming and frying
    • Boiling and baking
  3. When food is baked, what is actually cooking it?

    • Steam rising from a pan of water
    • Hot, dry air all around it
    • A thin layer of hot oil

The answers, each with its explanation, are in the app. This lesson has left the free week, so its quiz is part of the subscription.

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Daily Life, Age 13