A chafing-ish (from the Old French chauffer, "to make warm") is a kind of portable grate ("a dish of Coles") raised on a tripod, originally heated with charcoal in a brazier, and used for foods that required gentle cooking, away from the fierce heat of direct flames. The chafing dish could be used at table or for keeping food warm on a buffet. Double dishes that provide a protective water jacket are known as bain-marie and help keep delicate foods such as fish warm while preventing overcooking.