After so MANY times of food sticking, though, the interior has become stained. Heats the food good enough. I don't even mind having to manually wash it, because it's so easy to clean. It is just horrible at trying to cook with. I just wish these were a different color than green but I will put up with green to have a pan that I find so helpful in the kitchen 2.1 GreenPan Rio 12pc Ceramic nonstick cookware set (Our Top Pick