Do you know What is Buttermilk and Yak Milk. If you are looking for the definition of Buttermilk and Yak Milk or want to know what is Buttermilk and Yak Milk?, 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 Yak milk is the milk obtained from yak. It is sweet to taste and has rich fat content. Both these products are unique in their own ways. Buttermilk is a Not Available colored dairy product and Yak Milk 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 Yak Milk has Sweet flavor and a Sweet aroma. The color, flavor and the aroma of these products depict their origin. Buttermilk originated in India, whereas origin of Yak Milk is traced back to Tibet.