> "Tea Masters living in China nowadays say that boiling
> water must be used all the time even with green teas
> because high quality leaves can handle higher temperatures
> very well. ... If a tea claims to be high grade but the vendor
> instructions says that boiling water mustn`t be used then
> there is a chance that the tea is not so high grade."

The reason one doesn't want to use boiling water on green tea is that
the leaf itself has only been dried and steamed, therefore still left
in its green state. Boiling water can burn the leaf and make it taste
bitter. Best results would seem to be allowing your water to come to
a boil then allow a cooling off period. Green tea is best steeped at
temperatures ranging between 175 and 195.