Which of the Following Represents a Different Principle for Food

Question

Which of the following represents a different principle for food preservation?
A)Freeze-drying
B)Addition of salt
C)Smoking
D)Heating

Accepted Answer

Heating is not a principle of food preservation, it is a method of preparing or cooking food. The other choices involve specific methods of preserving food by altering its composition or environment. Freeze-drying removes moisture from food, salt inhibits bacterial growth, and smoking can both preserve and add flavor to food.