Cow's milk contains protein, calcium, phosphorus, vitamins A and D,lactose (milk sugar) and riboflavin.
Milk is available in many varieties:
Whole milk is the milk just as it came from the cow andcontains about 3 1/2 percent milk fat.
Lowfat milk comes in several types with most of the fatremoved (1-2 percent remaining).
Nonfat or skim milk have hadd almost all fat removed,and usually does not contain more than 1/2 percent milk fat.
Refrigerate milk as soon as you get it from the store. Milk readilyabsorbs flavors so always close milk cartons or other containerstightly. The storage life of milk is reduced greatly when allowed tosit out at room temperature for 30 minutes or more, as it would if putin a pitcher for serving.
Source: The food lover's companion by S.T.Herbst.