This durable ceramic material is designed for use in oven, microwave, refrigerator, and freezer and resists chipping and cracking. The non-porous surface does not absorb food odors, flavors, or stains. Ceramic server with glass lid sit in the warmer stand, and placing tealights underneath helps keep freshly prepared food warm. Warmer uses four tealight candles which are not included to keep food warm and ready to eat. 3.8-Quart capacity- dishwasher-safe.