Answer:
A plate warmer is a type of appliance or device specifically designed to warm plates before serving food. It is typically used in restaurants, hotels, or homes to ensure that plates are heated to an appropriate temperature, enhancing the dining experience by keeping the food hotter for longer periods. The plate warmer can be a standalone unit or built into a kitchen appliance like an oven or microwave. Early sideboard pedestals were fitted as plate warmers by lining with tin and fitting with an iron heater.