Do you know What is Buttermilk and Yakult. If you are looking for the definition of Buttermilk and Yakult or want to know what is Buttermilk and Yakult?, 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 Yakult is a probiotic dairy product made by fermenting a mixture of skimmed milk with a special strain of the bacterium Lactobacillus casei Shirota. Both these products are unique in their own ways. Buttermilk is a Not Available colored dairy product and Yakult 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 Yakult has Refreshing, Sweet and Tangy flavor and a Milky aroma. The color, flavor and the aroma of these products depict their origin. Buttermilk originated in India, whereas origin of Yakult is traced back to Japan.