A food warmer is also known as a holding well, a heating well and a warmer. Food warmers come in a variety of styles.
Restaurants often use countertop or buffet warmers. This type often uses pans that fit down into a heated system. The system provides heat at different temperatures to keep food warm. Some people use crock-pots and slow cookers to keep food warm. Another option is an overhead food warmer that hangs from a ceiling or platform directly over the food. The warmers contain heat strips or light bulbs that emit heat depending on the temperature it is set at.