Only 2 minutes in the microwave, stays hot for 1 hour ! Encased in heat-resistant silicone and polymer, the Magma's exclusive, energy-storing core is designed to accumulate and then release heat at the optimal thermal temperature. So food stays hot longer throughout the meal. Insulated base and sides make it safe and easy to handle. Easy to clean by hand Multiple uses- Keeps one dish hot while preparing another. Keeps food hot at the table for second servings Perfect for use with tea and coffee pot.