Traditional buttermilk is the low-fat, high-protein liquid left over after churning butter. If the butter-making process begins with cultured (fermented or ripened) cream, sour cream buttermilk is ...
Makes about 16 ounces (2 cups) each of butter and buttermilk. Note for recipes using homemade buttermilk: In recipes calling for homemade buttermilk, you may substitute each cup of homemade with a ...