Ceramic Grills, or as the Japanese call them "Kamados", are the best residential outdoor ovens going. These ceramic grills are based on cooking ovens and urns that came into use several thousand years ago. They are made of ceramics or refractory materials, the same stuff used to make kilns, crucibles, and pizza ovens—all extremely good insulators that store and radiate heat effectively. They're superb smokers and roasters, and they're unmatched as backyard pizza and bread ovens, because the sides and domes absorb heat and radiate it back like a professional brick oven, so the pizza and bread can cook properly from above. They're also great for paella and tandoori cooking too. When it comes to low'n'slow cooking they also produce outstanding results. The ceramics are so well insulated, and the interior absorbs and radiates heat so evenly, that they are very good at holding steady temps. Get a kamado started, bring it to temp, and there's little need to touch it until the meat is ready. So with all that in mind it's no wonder that ceramic grills/smokers/ovens is a fast-growing category.