Cheese is a dairy produce prepared from pressed milk curds. In order to help individuals reach the low fat dietary goal, low fat dairy has become a significant part. Switching from full-fat to low fat cheese saves about 3 grams of saturated fat and 40 calories per ounce. Different varieties are made from fresh (unripened) cheese or aged (ripened) cheese. There are more than 300 varieties of cheese—including Mozzarella, Cheddar, American, and Colby—several of which are available in different flavors, packages and forms (cubes, chunks, grated, slices, shredded, sticks, crumbled, spreads) to meet consumers' desires. Cheese is an excellent source of protein, calcium, phosphorus, sodium, and other nutrients. The texture and flavor of cheese depends on how old cheese is and the source of the milk. Proteins and fats are the main constituents of cheese.