Make your own ricotta cheese in your crockpot! The acid you choose will affect the final flavor. Apple cider vinegar will give a sharper tang, a distinct odor, and a subtle golden color; this is probably best for savory applications. Lemon juice will give a subtler flavor and will not curdle as abruptly. For the cleanest, purest flavor, use distilled white vinegar. If you don't like or can't find the goat's milk, you can sub another quart of low-fat cow's milk.