Barbecue is a device where cook food by applying heat from below. There are many types of barbecue grills, most of which fall into one of three categories: gas, charcoal, or electric grills. There is controversy as to which method can produce better results. Barbecue is a kind of barbecue equipment, which can be used to make grilled food such as lamb kebabs, barbecues, and grilled vegetables. The essence of a barbecue is to heat and cook food through a heat source. A barbecue in a narrow sense refers to a common barbecue, and it can cover different forms such as teppanyaki in a broad sense.