Takuan Sōhō (沢庵 宗彭, December 24, 1573 – January 27, 1645) was a Japanese Buddhist prelate during the Sengoku and early Edo Periods of Japanese history. He was a major figure in the Rinzai school of Zen Buddhism. Noted for his calligraphy, poetry, tea ceremony, he is also popularly credited with the invention of the takuan pickled radish. Source: Wikipedia (en)