Spring 1 - Food Science

Subdecks (5)

Cards (73)

  • Heat Transfers
    Conduction - transfer of heat between contact of two solids
    e.g: Stir fry and fried egg
    Convection - Transfer of heat in a liquid to form a convection current where hot water rises, then falls as it cools
    e.g: boiling water to carrots, poached egg
    Radiation (infra-red) - transfer of heat using electromagnetic radiation which are waves of heat or light which cook the food. No physical contact is made.
    e.g: grilling sausages, toasting bread
    Radiation (microwave) - the microwave oven converts electricity into microwaves which cook the food
    e.g: ready meals, heating up leftovers,
  • meat is cooked on a barbecue via infra red radiation. Infra red rays are absorbed by the surface of the meat and travel through it, cooking it evenly.
  • caramelisation occurs between 160 degrees celsius and 170 degrees celsius
  • egg whites coagulate at 60 degrees celsius. Egg yolks coagulate at 70 degrees celsius
  • An acid is added to bicarbonate of soda to neutralise it and help remove the soapy taste. Creme of tarta is an acid added to bicarbonate of soda to make baking powder