The original Kitchen Craft cookware was created through a unique process in which layers of metal were merged together across the bottom and up the sides of the pans. This merging of surgical stainless steel and aluminum alloy ensured that heat spread smoothly and quickly without hot spots. Today, this process has been perfected, using seven layers of metal, creating the most even heat conductivity imaginable. As a result, Kitchen Craft is the best energy-efficient thermal core cooking system in the world and is induction ready!!