The biggest secret of cast iron pans lies in their even heat distribution. The pans retain heat perfectly, allowing our dishes to be cooked gradually and evenly. Cast iron pans also have a significant impact on our health. Using a natural substance like cast iron in Teflon pans limits the amount of harmful substances that can leach into food. The inside and outside of the pan are coated with heat-resistant enamel, and the profiles at the edges allow for easy draining of excess fat.