Communication Grill Chang-tei, by Japanese artists Kou Sueda and Kouji Ishii, is an electric cooker controlled by a chat software for making Yakiniku (Japanese-style barbecue).
The conversation exchanged on a network powers the electric heater.
In order to roast meat, you have to continue carrying out a chat with the person that shares your table.
Once you stop chatting, the fire of the electric heater goes out. But beware, if the conversation gets too lively, the meat could burn.