A kotatsu is a low, wooden table frame covered by a futon, or heavy blanket, upon which a table top sits. Underneath is a heat source, formerly a charcoal brazier but now electric, often built into th
A modern Japanese kotatsu
The underside of an electric kotatsu, with the heater visible in the centre
Edo-period kotatsu at the Fukagawa Edo Museum
Mametan [ja] coal briquettes mostly used in the early twentieth century
A korsi, also referred to as a sandal in Central Asia, is a type of heated table traditionally found in Iran, Afghanistan and Central Asia. A korsi is the traditional centre of a home in Central Asian
Kotatsu
…are used almost exclusively in Japan, although similar devices for the same purpose of heating are used elsewhere, e.g. the Spanish brasero or Iranian korsi. The history of the kotatsu begins in the Muromachi period or Ashikaga shogunate during the fourteenth century. Its origins begin with the Japanese…
An Iranian family gathered around a korsi, 1982
A korsi display at the Nain Museum of Anthropology. The korsi is no longer commonly used in Iran, but remains widespread in Afghanistan and Central Asia.
Food and drink placed on top of a modern korsi