The C ayenne 7 Quart Round Heat N Serve Rethermalizer (72017) from Vollrath takes a container of cooked food from 40°F or below, up to 165°F in less than 90 minutes. The Vollrath Rethermalizer is extremely efficient and evenly transfers heat throughout the food product. The Heat N Serve features Vollraths Direct Contact Heating System, putting the heating element in direct contact with the water for the most efficient heat transfer possible.