Be the first to Write a Review We developed our new Thermo-Clad™ cookware drawing on over five decades of culinary experience, designing every element to provide years of great results in your kitchen. Available only at Williams-Sonoma, Thermo-Clad™ is crafted in Italy to our precise specifications using an exclusive aluminum alloy that provides up to 35% better thermal conductivity than other aluminum-clad metal cookware on the market. Use this high-performance stockpot for everything from simmering stocks and soups to boiling water for cooking pasta, vegetables or shellfish.