Back Name given to a large cut of mutton comprising the saddle and both legs. This name also applies to lamb. The origin of this name comes from England and was originally applied to a large cut of beef: the double sirloin roast. It is said that King Henry VIII, a great lover of roast beef, was so enthusiastic when he saw a magnificent "double sirloin" that was about to be served to him that he proclaimed it a "knight". This sanctioned title of nobility later became "baron of beef".