Also known as: こたつ, 炬燵, コタツ, 暖桌, 被炉
A low Table sandwiching a Blanket and containing an electric Heater underneath, with enough space to rest underneath for one or more people, depending on size. It is something of a Wintertime necessity for the many Japanese homes that lack proper insulation for central heating systems.
The consumption of Mandarin Oranges is often a favorite activity of kotatsu users.