Beef Cheeks
Beef cheeks are the facial muscles located underneath the jaw of a cow. Because cows spend their entire lives continuously chewing grass and cud, these muscles are heavily exercised, resulting in a cut that is incredibly dense, lean, and packed with connective tissue and collagen. While virtually inedible if cooked quickly, beef cheeks become the single most tender, unctuous cut of beef on the entire animal when braised slowly.