Did you know that one medium size bannock (Chapati) is equal to one
slice of bread, four Indian Marie biscuits and two tablespoons of cooked rice?
What it means is that all these four items have the same number of
calories, proteins, carbohydrates and fat and in terms of nutrient composition
can be substituted with each other. For instance, you can substitute a bannock
for biscuits or rice. That would increase the number of calories. This is the
food exchange system wherein foods in any one group can be substituted by a
different food within the same group, differing in only the portion size.
However, foods in one group cannot be exchanged for foods in other groups.
