Triply cookware from Stahl is made from a Clad material. Aluminium is clad between stainless steel. The inside layer is food grade stainless steel of 18/10 grade. This is what comes in contact with food. The outside is a very durable stainless steel of 430 grade. This is makes the cookware suitable for use with induction cooktops.
Aluminum is an excellent conductor of heat. It causes the heat to diffuse all over the pan uniformly and then the heat is retained by the steel. There will be no hot spots on the pan. It prevents the burning of food. And cooks food faster, making the pan more efficient. It does not come in contact with food.
Stainless Steel 304. Also known as 18/10. One of the best materials for food contact.