Do you know What is Buttermilk and Gruyere Cheese. If you are looking for the definition of Buttermilk and Gruyere Cheese or want to know what is Buttermilk and Gruyere Cheese?, 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 Gruyere Cheese is Bright Yellow 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 Gruyere Cheese 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 Gruyere Cheese is traced back to Switzerland.