Mauviel Made In France M'Tradition 2703.12 Copper 0.8-Quart Bain Marie Double Boiler with Porcelain Insert 0.8-quart copper double boiler system with 2 pans, 2 porcelain inserts, and lid Hammered copper exterior conducts heat efficiently Traditional tin wash interior is easy to clean and non-reactive Porcelain inserts help stabilize heat; bronze handles with copper rivets Hand washing recommended; limited lifetime warranty