The Science of Foil: Does it Really Keep Food Warm?
Does Foil Really Keep Food Warm Using foil to keep food warm relies on insulation and radiant heat transfer. When you use aluminum foil to cover food, it forms a barrier that reduces heat loss. This traps the air around the food, stopping it from cooling down. The foil’s reflective surface bounces heat back towards the food, helping to keep it warm. Insulation is a key component of keeping food warm, and foil is an effective insulator. Insulation works by preventing the transfer of heat from one area to another. Foil serves as a barrier between food and its environment, slowing down heat loss from the food. This is important …