It is generally believed that takuanzuke, pickled daikon, was invented by Takuan or was spread by Takuan in Edo while it had been popular only in the Kansai region.
ダイコンの漬物であるいわゆる沢庵漬けは一伝に沢庵が考えたといい、あるいは関西で広く親しまれていたものを沢庵が江戸に広めたともいう。