Put a bowlful of flour into a strong cloth, tie it up like a pudding, and place it in a kettle of boiling water. Boil for 10 or 12 hours. When boiled turn it out of the cloth and cut away the soft outside coating. When cool, grate the hard inside portion and use a teaspoonful at each feeding, for a baby 8 months old, increasing the amount for an older child. This may be prepared in the same manner as cornstarch or flour. The long boiling converts the starch into dextrine, which is more easily digested than starch. This is especially valuable in cases of diarrhoea, and may be used instead of barley gruel as a food.