Methods of Heat Transfer and Sauce Making

Which foods need cooking and why?

Why do we cook food?

• To destroy harmful bacteria

• To improve the colour, flavour, smell and texture of food

• To make food last longer

• To make the diet more varied

Name the method of heat transfer when cooking: a boiled egg.

• Conduction

• Convection

• Radiation

Name the method of heat transfer when cooking: a stir-fry.

• Conduction

• Convection

• Radiation

Name the method of heat transfer when cooking: a piece of toast.

• Conduction

• Convection

• Radiation

Name the method of heat transfer when cooking: a BBQ chicken drumstick.

• Conduction

• Convection

• Radiation

Name the method of heat transfer when cooking: cheese sauce.

• Conduction

• Convection

• Radiation

What happens when making a starch-based sauce?