Assam tea with their own distinctive characteristics. Historically, Assam has been the second commercial tea production region after southern China, the only two regions in the world with native tea plants. The introduction of the Assam tea bush to Europe is related to Robert Bruce, a Scottish adventurer, who apparently encountered it in the year 1823. Bruce reportedly found the plant growing "wild" in Assam while trading in the region. Maniram Dewan directed him to the local Singpho chief Bessa Gam. Bruce noticed local tribesmen (the Singhpos) brewing tea from the leaves of the bush and arranged with the tribal chiefs to
Sayama tea of tea was interrupted by war during the Sengoku period. Widespread tea growing restarted in the Mid-Edo period. In 1802, a technique called , first steaming and then roasting on the surface of washi was invented by , , and , based on the Uji roasting technique, which was deemed the best method in Japan at that time. This led to the revival of tea production in the region. In 1819 (Bunsei 2), tea leaves produced in this method started to be shipped to Edo in large amounts, receiving good reputations. After the Meiji Restoration, tea became one of the