Hawkins Tri-ply Stainless Steel Tava 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. Hawkins tri-ply stainless steel Tava is durable, well-balanced and stays flat for quick cooking on gas, induction and electric cooktops. The 3.5 mm extra thick tava has a unique shape with a flat base and gentle sloping sides has just the right curvature for optimal cooking results - oil does not pool, nor spill over the sides. The placement of the rivets is carefully designed to maximise the cooking area. The strong 6.0 mm thick stainless steel stay-cool wire handle is comfortable and safe to hold even when the tava is hot.