Do you know What is Buttermilk and Eggnog. If you are looking for the definition of Buttermilk and Eggnog or want to know what is Buttermilk and Eggnog?, 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 Eggnog is a Dairy based beverage, made from milk, sugar, and whipped Eggs. Both these products are unique in their own ways. Buttermilk is a Not Available colored dairy product and Eggnog is Cream 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 Eggnog has Creamy, Thick and Vanilla flavor and a Sour smell aroma. The color, flavor and the aroma of these products depict their origin. Buttermilk originated in India, whereas origin of Eggnog is traced back to England.