Griddles have a flat metal plate for frying commonly constructed of steel, although you may find aluminum topped griddles. While griddles most often have a smooth surface, some griddles may have a grooved surface on part or all of the surface to achieve that broiled look on hamburger or steaks. Some griddles are further specialized, such as Teppanyaki Griddles, Panini Griddles, Tortilla Griddles, Drop-In or Built-In Griddles, Outdoor Griddles, or Floor models which sit on top of an oven or cabinet base or range.