Material Superior rustproof foodgrade TriPly Stainless Steel It comes with a glass lid Curved Handi Body for easy stirring of difficult dishes Hawkins TriPly Stainless Steel Cookware is made of three layers The Cooking Surface is made of AISI 304 188 food grade stainless steel that is extremely hygienic durable and nonreactive to most foods It does not pit or corrode The Core is made of heavy gauge aluminium which spreads heat evenly and prevents hot spots The Base and Outer Surface is made of AISI 430 grade magnetic steel works well on gas ceramic halogen electric and induction cooktops