It looks like milk, but it is not purely milk. Kefir may also pass as a yogurt drink, but it is not the same as that, as well. Kefir is actually milk with kefir grains. The mixture of these two ingredients promotes fermentation and thus, it becomes a probiotic food. It can be your breakfast on the go meal or your snack time food with cereal. Kefir tastes good too and you can even make it into popsicles.