300px|thumb|Baisao with his portable tea stand, as depicted in a gently comical caricature painting (Japanese) of the late 19th–early 20th century (1675–1763) was a Japanese Buddhist monk of the Ōbaku school of Zen Buddhism, who became famous for traveling around Kyoto selling tea. The veneration of Baisao during and after his lifetime helped to popularize sencha tea and led to the creation of Senchadō.
300px|thumb|Baisao with his portable tea stand, as depicted in a gently comical caricature painting (Japanese) of the late 19th–early 20th century (1675–1763) was a Japanese Buddhist monk of the Ōbaku school of Zen Buddhism, who became famous for traveling around Kyoto selling tea. The veneration of Baisao during and after his lifetime helped to popularize sencha tea and led to the creation of Senchadō.
==Names== Baisao went by many names during his lifetime, as was common at the time. As a child, he was known as Shibayama Kikusen. When he became a monk, his Zen priest name was Gekkai Gensho. Baisao, the nickname by which he is popularly known, means "old tea seller." He acquired this name from his act of making tea in the Kyoto area. Later in his life, he denounced his priesthood and adopted the lay name of Ko Yugai.
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