i love green tea too! but TS, u might wanna try diff brands i think BOH one not that nice. get those green tea from the japanese food section in hypermarket, taste more "original" IMO. green tea have caffeine too, although not much, but can disturb sleep too if taken at late night. normally i'll use 1 tea bag for 1 mug ~300ml, don't use water that's too hot and don't soak too long, coz it will make the tea goes pungent and very bitter