These cookware are made of die cast aluminum and the cooking side is ceramic coated for a nice and smooth surface to cook on; it is easy to clean, healthier due to the need of less oil to cook and a lot more resistant than other non-stick conventional materials used in the industry. By using the ceramic to cook, the food will cook more evenly in less time due to the superior heat retention, and they are dishware safe for more convenience. It can be used safely while being cooked through the spillover prevention system using by revolving on/off on the lid.