芋の煮えたもご存じない いものにえたもごぞんじない Also written 芋の煮えたも御存じない Meanings Expression being ignorant of the ways of the world; knowing nothing (literally: not being able to tell if a yam is boiled or not) Kanji 芋 potato. Read as いも. 煮 simmer. Read as にえる. 存 exist. Read as ソン. Word lists Idioms Jinuma: Japanese Dictionary · Word lists