We developed our new Hard-Anodized Copper Core nonstick cookware drawing on over five decades of culinary experience, designing every element to provide years of great results in your kitchen. The professional-quality pieces combine the impeccable heat conduction of copper with the durability and easy care of hard-anodized aluminum. Designed to heat up and cool down rapidly, each piece features a thick copper core for unrivaled temperature control, so foods cook faster with no hot spots, and you can cook more efficiently using lower heat. This 4-qt. pan comes with a perforated steamer insert perfect for steaming vegetables or fish.