A countertop food warmer is an appliance that fits on most kitchen counters and keeps cooked food warm for serving. Countertop food warmers can be found in both home and commercial kitchens.
The capacity of a countertop food warmer typically ranges from 3 to 6 gallons, but larger types exist. Many restaurants use plate warmers to keep dishes at the right temperature between cooking and service, and caterers may use heated banquet or transport carts to hold multiple pans as they travel from the kitchen to the service destination. Overhead heat lamps are often used by fast food restaurants to keep burgers warm and ready for sale.