Of course, milk tastes good in the raw as well as in the cooked or boiled form. Therefore, we continued with its adaptation. Previously, it was used for medicinal purposes, and as a substitute for mother’s milk. But gradually it became a major part of man’s staple diet. Can a substitute adapted in place of mother’s milk, be continued as a normal staple food? If we agree that mother’s milk is not an adult food, then how can its substitute be one?