Copper has always been the best conductor of heat, and this Butterwarmer, part of All-Clad's Cop-R-Chef collection, is among the best cookware has to offer in quality and performance. If you love some melted butter for dipping your lobster, crab, artichoke leaves and more, this little pan is all you need. Bring it to the table for serving -- it's as beautiful as it is functional. Copper exterior on bottom and sides combined with a heavy aluminum core ensures your food will cook evenly and thoroughly. You'll rarely need to heat pans above medium temperature. All-Clad is the undisputed choice among 4-star chefs and is available in five distinct designs.