Sago is made from the milk of tapioca root, which is cleaned, peeled, crushed to release the milk, and then converted into small globules using a special machine before being dried under direct sunlight. Sago, also known as sabudana in India, is a popular infant food and for breaking fasts as it is high in starch and energy but low in protein, vitamins, and minerals. It can be enriched by adding items like groundnuts, vegetables, and milk.