What Happens If You Use Milk Instead Of Buttermilk?
If you use milk instead of buttermilk in a recipe, the final result may not have the same taste, texture, or consistency. Buttermilk has a tangy, acidic taste that helps to activate baking soda or baking powder in recipes. Whole milk or low-fat milk does not have that acidity, so the chemical reaction during baking may be altered, resulting in a flatter or denser baked good. To substitute, you can add 1 tablespoon of vinegar or lemon juice to 1 cup of milk to create a homemade buttermilk substitute.