Sour Milk

           

I got this recipe and the Chocolate-Buttermilk Sheet Cake recipe from the 

Better Homes and Gardens Cookbook

If you don't have buttermilk on hand when preparing baked goods, substitute sour milk in the same amount. For each cup

of sour milk needed, place 1 tablespoon lemon juice or vinegar in a glass measuring cup. Add enough milk to make 1 cup total liquid; stir. Let mixture stand for 5 minutes before using.