In 1963, Calphalon founder Ron Kasperzak purchased a small metal spinning company in Perrysburg, Ohio. Ron's vision was to expand and upgrade the limited aluminum cookware options for the professional chefs. A few years later, Ron created a cookware renaissance by applying a new aerospace technology - hard anodization - to cookware, giving it exceptional durability and superior heat conduction. In 1976, Calphalon went retail, and for the first time, consumers could experience the superior cooking performance that previously only professional chefs enjoyed. Today, Calphalon is the culinary expert in cookware, kitchen electrics, cutlery, bakeware, utensils & gadgets and more. Calphalon continues to inspire and instill confidence as you create your favorite dishes that express your culinary passion.Classically styled with a polished stainless steel and a satin finished interior, Tri-Ply Stainless Steel cookware is designed with three layers to ensure even, consistent heating. A heavygauge aluminum core surrounded by stainless steel provides excellent heat conduction for browning and enhanced control of the cooking process.