Buttermilk sure sounds fat-laden -- like something found in rich, caloric dessert recipes and mashed potatoes. And if you've ever tried it, you know that it is indeed thick and creamy, just as its name suggests.

In reality, buttermilk is low in fat because it's usually made from skim or low-fat milk. This makes buttermilk an excellent beverage choice: a good source of calcium and protein; a creamier alternative to everyday milk; and a low-fat option if you're watching your blood cholesterol levels or your weight.