Spend as much for milk as is necessary to secure for each child three-quarters of a quart to a quart of milk a day and for every one else in the family from one-third to one-half a quart of milk a day. Buy skim milk if you can not afford whole milk; give this to the children. Cheese may replace a part of the milk for adults if they prefer it. Two ounces of cheese may be substituted for about one-third of a quart of milk.