What's in a Box: Multi-Ply Clad Stainless Steel Tagine 4.5-QT, Ceramic white Lid, Extra Glass Lid. What is Multi-Ply Clad metal construction? A combination of 18/10 stainless steel with a multi-element aluminum core creates a permanent bond of metal, so heat passes through the whole pan-along the bottom and up the sidewalls, not just along bottom, which gives you maximum cooking performance. This construction is only used in the highest-grade cookware. What is Tagine? Tagine is a traditional type cookware widely used in North Africa area, it consist of two parts, bottom pan and a cone shape lid, now we use advanced technology of Multi-Ply Clad stainless steel to make bottom pan, so, you don't have to worry about clay pot become crack, you do not need to use heat diffuser any more, compare to clay pot, this Multi-Ply clad stainless steel cooks food more evenly and thoroughly, it is also suitable for use in all kind of stovetop, include induction stovetop.