Overview
Barbecue sauce (also abbreviated as BBQ sauce) is a sauce used as a marinade, basting, condiment, or topping for meat cooked in the barbecue cooking style, including pork or beef ribs and chicken. It is a ubiquitous condiment in the Southern United States and is used on many other foods as well.
Ingredients vary, but most include vinegar or tomato paste (or a combination) as a base, as well as liquid smoke, onion powder, spices such as mustard and black pepper, and sweeteners such as sugar or molasses.
History
Some place the origin of barbecue sauce at the formation of the first American colonies in the 17th century. References to the sauce start occurring in both English and French literature over the next two hundred years. South Carolina mustard sauce, a type of barbecue sauce, can be traced to German settlers in the 18th century.
From Wikipedia (CC BY-SA 4.0).