Pu-erh tea, this is a variety of post-fermented tea produced in Yunnan province, China.

nTea thrives in highland tropics and sub-tropic regions.

nThree species of tea: Assam, Yunnan and Cambodia

nThe smaller is the leaf, the better will be the Tea.

n More fermented are the tea, darker will be the tea leaves.

n There are at least six different types of tea: White, Yellow, Green, Oolong, Black (Red Tea in China) and Post-fermented tea (Black Tea in China).

The basic ingredient of green tea is the same as the basic ingredient of normal ("black") tea: tea leaves, that is, the leaves from the tea shrub. In the case of black tea, the leaves are fermented; green tea is unfermented, or fermented less. But the leaves are the same.

In Chinese, "black tea" is just a commonly used group for post-fermented teas, including chai tea; outside China and its neighboring countries, "red tea" more commonly describes Rooibos tea, In Indian, Tes is so common so you can get anytime anywhere.

No there isn't There is no nicotine in tea. You only get nicotine from exposure to the burning of fermented tobacco leaves.