The Thermos Shuttle Chef Thermal Cooker is a premium and convenient slow cooker for easy yet delicious meals on the road or at home. The Shuttle Chef is comprised of an inner stainless-steel saucepan with carbon steel plates sandwiched into the heavy-duty stainless-steel base. The Thermos Shuttle Chef combines Japanese technology with practical design to enhance kitchen efficiency. It uses a brief period of high heat to bring your food to a boil. After reaching boiling point, its superior heat retention significantly reduces further energy use.