Mauviel Copper 15-3/4-Inch Mixing Bowl Commercial quality 15-3/4-inch copper mixing bowl with 17-quart capacity Ideal for whipping egg whites as they react with copper to create a stable foam Made of heavy, unlined solid copper with smoothly polished exterior and exterior Complemented by a solid bronze handles on either side, riveted to body of pan for added durability Hand washing recommended; polish exterior with copper-safe cleanser; limited lifetime warranty