tea that I have.
Basically there are three types of tea; Black (fermented), Green(not fermented) and Oolong semi-fermented).
Black tea go through four steps process; Withering (fermentation), Rolling, Fermentation and Firing.
Green tea go through these 3 processes; Panfiring, Rolling and Firing.
Oolong tea go through only 2 processes; Withering (brief fermentation) and Firing (to stop fermentation)
Although I drink tea almost everynight, I can still sleep well! Caffeine has no effect on me! LOL!