History of tea in India be the "norm", with China tea a minority taste. Until the 1970s and the rise of instant coffee, Indian tea had almost sole command of the hot drinks market. Its rivals were cocoa, coffee and savoury drinks such as Bovril and Oxo. In the early 1820s, the British East India Company began large-scale production of tea in Assam, India, of a tea variety traditionally brewed by the Singpho people. In 1826, the British East India Company took over the region from the Ahom kings through the Yandaboo Treaty. In 1837, the first English tea garden was established at Chabua in
Sayama tea were brought to this region by rivers. The upper layer is made of a reddish loam created by the accumulation of volcanic ash. Together, these two layers make the region unsuitable for growing rice but suitable for tea growing, which requires high precipitation and high soil permeability. It is known that the Japanese people started growing tea trees roughly 800 years ago when Buddhist monks who traveled to China brought back seeds. A historical document from the Nanboku-chō period, , mentions as one of the best regions for tea along with , , , , and . However, the production