Kefir with a fat content of 2.5% from cow's milk is a fermented milk drink made from cow's milk and kefir cultures. Kefir has a slightly sour taste and is known for its probiotic properties, as the fermentation process creates beneficial bacteria that can improve digestion. It can be consumed neat or with the addition of fruits, spices or sweeteners. The extra fat in 2.5% fat cow's milk kefir may contribute to a creamier texture and richer flavor compared to lower fat kefir.