At Tokai-ji Temple (Shinagawa Ward, the Metropolis of Tokyo) built by Sosho TAKUWAN, there is a legend saying, "Takuan-zuke was originally a nameless pickle but when served takuan-zuke during his visit to the temple one day, Iemitsu TOKUGAWA enjoyed it so much that he said, 'If it has no name, call it takuan-zuke.'"
沢庵宗彭が創建した東海寺(東京都品川区)では、「初めは名も無い漬物だったが、ある時徳川家光がここを訪れた際に供したところ、たいそう気に入り、『名前がないのであれば、沢庵漬けと呼ぶべし』と言った」と伝えられている。