 In most cases, the steel cooking surface is seasoned like cast iron cookware, providing a natural non-stick surface.Charbroiling, or chargrilling outside North America, refers to grilling on a surface with wide raised ridges, to the point of having the food slightly charred in texture.In the United States, oven pan broiling refers to a method of cooking inside an oven on a broil pan with raised ridges, where the heat can be applied from either above or below.