Hot dog roller grills can cook multiple hot dogs at once. The stainless steel cylinders they are made up of slowly spin in circles to rotate the hot dogs while they cook. The benefit of this is that the rollers cook and heat the hot dogs slowly and evenly, better than cooking in a fry pan or microwave. Hot dog rollers are great for convenience stores and concession stands because some can hold up to thirty hot dogs! There are also smaller versions available for home use. One disadvantage to a hot dog roller is cleaning it. You will have to put a lot more effort into cleaning one as opposed to a microwave or pan. Hot dog rollers are a great addition to any restaurant, store, concession stand, or home!!