Hawkins Tri-ply Stainless Steel Cook n Serve Handi is designed to give you all the advantages of cooking in stainless steel while minimizing the disadvantages of sticking and burning that are normally associated with ordinary stainless steel. The cooking surface (inner surface) is made from 18/8 food-grade (AISI 304) stainless steel which is extremely hygienic, most durable, does not react with most foods and does not pit or corrode. The heavy gauge aluminium core spreads heat well for even cooking with no hot spots, and retains heat for quick cooking. It is sandwiched between two layers of stainless steel and does not come in contact with food on the cooking surface. The base (outer surface) is made of AISI 430 grade magnetic stainless steel. Hence this cookware can be used on all domestic gas, induction, electric, ceramic and halogen cooktops. The unique curved body of the Cook-n-Serve Handi is most suitable for stir-frying, sautéing and foods that require considerable stirring, and makes light work of difficult dishes too! The toughened, thick Glass Lid is made of heat-resistant glass with a strong stainless steel rim and stay-cool knob. It stops splatter of hot foods. The snug-fit glass lid locks in the steam, heat and flavours.