The McRib is a sandwich sold by the international fast-food restaurant chain McDonald’s. The McRib consists of a boneless pork patty, barbecue sauce, onions and pickles served on a 6 inch (15.2 cm) roll. The patty is precooked, frozen and later reheated. When served, the patty is covered with sauce.
Barbecue sauce (also abbreviated BBQ sauce) is a liquid flavoring sauce or condiment ranging from watery to quite thick consistency. As the name implies, it was created as an accompaniment to barbecued foods. While it can be applied to any food, it usually tops meat after cooking or during barbecuing, grilling, or baking. Traditionally it has been a favored sauce for pork or beef ribs and chicken.