hotpot boss; person who takes charge of cooking a communal hot pot
Jocular term for someone who insists on directing how a nabe (hot pot) is cooked and served, often to the point of being overbearing.
He's such a hotpot boss that he won't let anyone put in the ingredients they like.
When there's a hotpot boss, the nabe party ends up being no fun.
Compound of 鍋 (nabe, 'hot pot') and 奉行 (bugyō, 'magistrate, commissioner'). The term humorously likens a bossy person at a nabe meal to a feudal official.