Do you know What is Buttermilk and Kefir. If you are looking for the definition of Buttermilk and Kefir or want to know what is Buttermilk and Kefir?, then this is where you will fetch your answers. Well, in simple terms Buttermilk is a liquid made by the process of churning butter out of cream. While Kefir is fermented milk made by using kefir grains containing benefiicial yeast as well as probiotic bacteria found in the yogurt. Both these products are unique in their own ways. Buttermilk is a Not Available colored dairy product and Kefir is Not Available colored. The food gets it color dependent on the ingredients used and the preparation methods employed. Sometimes artificial food colors are added to give the dairy product, a gourmet look. Apart from their color what distinguishes them is their flavor and aroma. Buttermilk bears Sour flavor with a Sour smell aroma whereas Kefir has Yeasty flavor and a Milky aroma. The color, flavor and the aroma of these products depict their origin. Buttermilk originated in India, whereas origin of Kefir is traced back to North Caucasus regions.