Rich in nutrients, milk has been a food staple for centuries. Used in cooking, baking or simply as a wholesome beverage, Milk is a great way to get calcium and protein into your diet. Whole milk contains at least 3.25% milk fat. When a portion of the milk’s fat is removed, it becomes partly skimmed milk, such as 2% milk and 1% milk, depending on the quantity removed. Skim milk is virtually fat-free, with only about 0.1% fat.