Buttermilk powder offers all the nutrition and flavor of regular buttermilk in a convenient, easy-to-store format. It delivers 8.6 g of protein in a 1-cup serving, as well as lots of potassium, vitamin B-12, calcium, riboflavin and phosphorus, according to the editors of “The Visual Food Lover’s Guide.” Unlike regular buttermilk, most powdered buttermilk does not contain live bacteria. According to Amy Thomson of Saco Foods, powdered buttermilk is not meant to be used as a liquid beverage. Buttermilk powder works best in baking, where it adds the acidic tang that heightens the flavors of yeast breads, waffles, pancakes, muffins and quick breads.
Use powdered buttermilk in place of liquid buttermilk or sour milk in any recipe. However, powdered buttermilk does affect the actions of leaveners, such as baking powder and baking soda, so you need to use specific amounts.
Add powdered buttermilk to the dry ingredients when your recipe calls for combining wet and dry ingredients. Add an additional amount of water to the recipe’s wet ingredients.
Use specially formulated conversions in your baking recipes. For instance, for 2 tbsp. of buttermilk, add 1 1/2 tsp. of powdered buttermilk plus 1/2 cup of water. For 1/4 cup of buttermilk, add 1 tbsp. powder and 1/4 cup of water. Check conversion tables for other amounts.
Substitute buttermilk powder for buttermilk in creamy salad dressings. Use a whisk to help break any clumps of buttermilk powder.
Use buttermilk powder in coatings for fried chicken without worrying about specific conversion amounts. The tang of the buttermilk powder provides a welcome contrast with the fattiness of the fried chicken.
Substitute buttermilk powder for buttermilk or sour cream in frosting recipes. The buttermilk tang works especially well for carrot cake frosting.
Store buttermilk in the freezer to increase its shelf life. Additional conversion amounts provided by Saco Foods include: 1 1/4 tbsp. of powder and 1/3 cup of water for 1/3 cup of buttermilk; 2 tbsp. powder and 1/2 cup water for 1/2 cup of buttermilk; 2 1/2 tbsp. powder and 2/3 cup water for 2/3 cup of buttermilk; 3 tbsp. powder and 3/4 cups water for 3/4 cups of buttermilk; and 4 tbsp. powder and 1 cup of water for 1 cup of buttermilk.
While buttermilk powder lasts far longer than regular buttermilk, it does still have a shelf life of six to nine months, according to the U.S. Dairy Export Council.