Tradition has it that a sumo wrestler who has took care of cooking as chankoban for a long time serves as chankocho and therefore, it is sometimes said that "sumo wrestlers who are good at cooking will not succeed in sumo."
長年ちゃんこ番をしている力士がちゃんこ長を務めるという伝統から「料理がうまい力士は出世しない」と言われることがある。