Do you know What is Yak Milk and Kefir. If you are looking for the definition of Yak Milk and Kefir or want to know what is Yak Milk and Kefir?, then this is where you will fetch your answers. Well, in simple terms Yak milk is the milk obtained from yak. It is sweet to taste and has rich fat content. 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. Yak Milk 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. Yak Milk bears Sweet flavor with a Sweet aroma whereas Kefir has Yeasty flavor and a Milky aroma. The color, flavor and the aroma of these products depict their origin. Yak Milk originated in Tibet, whereas origin of Kefir is traced back to North Caucasus regions.