The body and lid are made from superior grade AISI 304 non-magnetic stainless steel. The cooker has an external base of AISI 430 grade magnetic stainless steel which makes it induction compatible. It has a 6.6 mm thick sandwich bottom to ensure uniform heating and no hotspots. The base always stays flat and never bulges. The cooker body has curved sides for easy stirring. It stays bright, does not pit or corrode, is extremely hygienic and stays looking new for years. Suitable for use on all domestic gas, electric, halogen, ceramic, and induction cooktops. Ideal for 5 or 7 people. 100% stainless steel body and lid. Inside fitting safety lid - will not open until the pressure falls. Curved body for easy stirring. Thick base - stays flat, heat evenly. Hawkins Pressure Cooking can reduce normal cooking time as much as half you save fuel and therefore money. Also, steaming is ideal for low-calorie, low-fat cooking. It evokes the natural flavours of the food-producing delicious results. Pressure cooking retains certain nutritive elements such as proteins and vitamins.