Homemade buttermilk is a versatile and indispensable kitchen staple, especially useful in baking to add tenderness and a slight tang to cakes, biscuits, and pancakes. While traditional buttermilk is the liquid left behind after churning butter, the more commonly used cultured buttermilk can be easily replicated at home with just milk and an acid, such as lemon juice or vinegar. This quick and straightforward method provides a ready-to-use buttermilk substitute that can enhance the flavor and texture of your recipes, ensuring you never have to forgo a recipe that calls for it just because you don’t have buttermilk on hand.