Green tea category / Nature of tea 2014.07.29 by Leo Kwan · Published 2014.07.29 · Last modified 2020.02.24 A (Very) Brief History of Green Tea The use of tealeaves as a medicine has been in existence for three millenniums in China, but it is unclear when it has become a drink until Wang. Further records of it being a hospitality beverage and a grocery item were…