Made using our patented process of bonding 5 alternating layers of stainless steel and aluminum, this collection has an ultra-forgiving cooking surface that distributes heat more evenly and eliminates hotspots, making every bite identically delicious. Handcrafted in our Canonsburg, PA factory, our D5 cookware is made using ultra-durable stainless steel that won’t warp or tarnish, so it’ll cook like new for years. Bonded, Engineered, & Assembled in USA. Gas, electric, or induction, the D5 Collection works with all kinds of cooking surfaces, to give you the ultimate versatility. You can even put it in the oven or broiler (up to 600°F).