Designed for use with a Le Creuset Cast Iron Round Casserole, the Stainless Steel Steamer is perfect for healthy cooking of poultry, fish, vegetables and desserts. Crafted from high quality single-ply 18/10 stainless steel, it sits beautifully with the 3-ply range, where a core of aluminium is sandwiched between 2 layers of premium grade stainless steel cleverly combining the cooking benefits of both materials. The aluminium stretches from base to rim, meaning heat spreads evenly and gently throughout the entire pan - not just the base.