Love making homemade butter? You’ll love making homemade cultured butter ever more — especially since yogurt is the only culture you need!
There are butter cultures you can purchase from cheese-making suppliers, but I simply use yogurt since it is so readily available. My local dairy (Strauss) makes an excellent yogurt and this is what I used for this post. As with the cream, try to avoid an overly processed yogurt. My yogurt contains milk and yogurt culture and nothing else — no stabilizers, flavorings, or other additives.