Question: what is the difference between hard enamel and porcelain enamel cookware?
Answer: Food adheres when first put into the pan, but as it nears doneness, it's released from its bond. Hard-anodized cookware is stick-resistant. Porcelain enamel over iron, aluminum or stainless steel is non-stick. Bits may be left behind, especially during high-heat cooking, but they scrape off with little effort.