Do you know What is Buttermilk and Filled Milk. If you are looking for the definition of Buttermilk and Filled Milk or want to know what is Buttermilk and Filled 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 Dairy Product Both these products are unique in their own ways. Buttermilk is a Not Available colored dairy product and Filled 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 Filled Milk has Not Available flavor and a Not Available aroma. The color, flavor and the aroma of these products depict their origin. Buttermilk originated in India, whereas origin of Filled Milk is traced back to Unknown.