Beef shank, also known as osso buco when cross-cut, is a flavorful cut taken from the leg of the cow. It features a dense, lean meat surrounding a central marrow-filled bone. This cut is prized for its rich, beefy flavor and the creamy, savory marrow within the bone. Due to its tough texture, beef shank is best suited for slow cooking methods like braising or stewing, which break down the connective tissue and result in tender, melt-in-your-mouth meat.