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
Kenya Ceramic Jiko depth of the most universally used types of the KCJ range from 70–100 mm. The idea for the Kenya Ceramic Jiko came from the Thai Bucket Stove and was modeled after the Kenyan Traditional Metal Stove known as TMS. It was from the re-designing of these two stoves that the Kenya Ceramic Jiko was created. Through the collaboration of both local and international organizations, the Kenya Ceramic Jiko evolved and took shape. Organizations such as CARE, UNICEF, The Bellerive Foundation, as well as the United States and German aid agencies all played a role in the development and promotion of