Masonry oven India, tandoors are traditional clay ovens, although these days modern electrically fired tandoors are available. The open-topped tandoor is a transitional design between the earth oven and the Roman-plan masonry oven. In the precolumbian Americas, similar ovens were often made of clay or adobe and are now referred to by the Spanish term "horno" (meaning "oven"). Horns are also traditional in the American Southwest. The traditional direct-fired masonry design is often called a "Roman" or "black" oven and dates in Western culture to at least the Roman Republic. It is known as a black oven because the fire generates soot
Ceramic houses constructed using the principles of an ancient Chinese anagama kiln. In the anagama kiln system, a wood fire is built at the base of a slope, and the gases are drawn by a strong draft up the slope through a tunnel. When a dome is constructed at the end of the tunnel out of clay, the hot gases bake the clay structure to ceramic hardness. Ceramic houses Ceramic houses are buildings made of an earth mixture which is high in clay, and fired to become ceramic. The process of building and firing such houses was developed by Iranian architect, Nader