U.S. Grade AA or U.S. 93 Score  butter conforms to the following: Possesses a fine and highly pleasing butter flavor. May posses a slight feed and a definite cooked (fine) flavor. It is made from sweet cream of low natural acid to which a culture (starter) mayor may not have been added. The permitted total disratings in body, color and salt characteristics are limited to one-half (1/2).