This is my ideal start to the day – fruit and a probiotic. You can buy ready-to-drink milk kefir from health food stores. However, if you want to follow the recipe and make your own sheep’s milk kefir, you can buy milk kefir grains at a health food store or online. These grains are the bacteria that ferment the milk into a probiotic drink. When you strain your kefir milk you will be left with the grains. You do not eat these milk kefir grains – these are used as a starter for making the drinking kefir in the recipe. Remember that the milk kefir grains after every batch will grow and, after a handful of times, you will have enough milk kefir grains to give some to your friends. When you are not making kefir, store the milk kefir grains in a puddle of milk in the refrigerator to keep them hydrated. Please note that milk kefir grains are different from water kefir grains, and you cannot interchange them.