What type of equipment is typically used to keep food warm?

Heat lamps and warming trays are specifically designed to maintain food at safe, warm temperatures for serving. These pieces of equipment focus on providing a warmth that keeps prepared foods ready for consumption without cooking them further. Heat lamps, for example, utilize bulbs that emit radiant heat, which is effective for keeping dishes warm over an extended period. Warming trays function by using a heat source underneath the surface to evenly distribute warmth, ensuring that the food remains appetizing and safe to eat.

In contrast, refrigerators are used for cooling and preserving food at cold temperatures; microwaves are intended for quickly heating or cooking food; and ovens are generally used for baking or roasting, which involves cooking rather than simply keeping food warm. Thus, the primary role of heat lamps and warming trays aligns perfectly with the requirement to keep food warm prior to serving.