Use on gas or electric cooktops and ranges to expand cooking area. Commercial-grade, cast aluminum non-stick surface cooks evenly, or thaws food quickly without heat. Recessed channels drain unwanted juice and oil. Molded handles. Clean with warm, soapy water. From the Manufacturer Use on gas or electric cooktops and ranges to expand cooking area. Commercial-grade, cast aluminum non-stick surface cooks evenly, or thaws food quickly without heat. Recessed channels drain unwanted juice and oil. Molded handles. Clean with warm, soapy water.