Hot buffet is usually food held in metal containers sitting over a bath of steam to keep the food hot. In other places, they keep replenishing the food so that it remains hot.
Metal is a good conductor of heat, therefore heat leaks out of it easily, and it does not keep food hot all that well. Styrofoam keeps food hot.
Keep hot foods hot, and keep cold foods cold.
To keep cold food cold or hot food hot. Styrofoam is very good insulation.
Heat lamps.
To keep cold food cold or hot food hot. Styrofoam is very good insulation.
HOTSMART PLATES keep food hot, and some people are using them after bariatric surgery or WLS (WEIGHT LOSS SURGERY), however they were designed simply to enjoy hot food. they remain hot for 30 minutes plus.
keep the food hot
Its radiation
A food warming tray usually just gets hot enough to keep food that is already warm, warm. A crockpot on the other hand will keep food warm and get hot enough to cook it.
Cold food should be kept at 40 degrees or lower. Keep hot foods hot. This will insure safe food to eat.
The infrared heat is transferred to the food by radiation.