My name is swimmer.
This year, we spend a lot of time at home, so I order various teas online and enjoy them at home.
The so-called green tea we drink daily is the evergreen tree of the camellia family that grew naturally in the mountainous regions of Asia, and it seems that it was originally taken as a medicine.
We are not certain when green tea, which was roasted with fresh green leaves in boiling water, become fermented and drinkable oolong tea or black tea or who even discovered it.
There may have been various elements of people’s history and times.
From the history of black tea, Japan Tea Association (Japanese only)
https://www.tea-a.gr.jp/knowledge/tea_history/