Copper-Core’s patented five-ply bonded design utilizes a copper center core to maximize heat conductivity and responsiveness. The copper ply is bonded to aluminim to enhance heat distribution while reducing weight. The bonded exterior and and interior layers are highest quality stainless steel, providing ideal cooking surface, ease of cleaning, extreme durability and sculpturesque aesthetic appeal. This 2.5-Quart Windsor is another copper core sauce pan option, this one with a flared shape for drip-less pouring. Traditionally used for reducing sauces, it also accomplishes other more mudane sauce pan tasks with style