Yes! If you're like me and hate wasting anything, then you will love this idea.  Use it to make fried chicken, pancakes, waffles, salad dressings, and baked goods. Think outside the box. You can also freeze it for later. Pour it into an ice cube tray so it’s in convenient sizes whenever a recipe requires some. Just thaw it in the fridge the night before, and then add it to all your favorite recipes.  If the buttermilk goes bad, you’ll notice that it smells terrible and has a more chunky texture to it. The color of the homemade buttermilk will also change too. If you ever notice anything odd, it’s best to pour it out.