Have you ever needed buttermilk for a recipe — like Chili Pepper Madness’jalapeno “bottle caps” or Alexandra’s Kitchen’s buttermilk blueberry breakfast cake — but didn’t have any on hand? If so, there ...

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 ...

Today’s buttermilk isn’t quite the same as its predecessor—and it could affect your baking.