My order from Tea Time arrived, and I promptly brewed a cup of
Gunpowder "Temple of Heaven" Green tea.

It turned out fairly bitter, astringent and grassy tasting, which
doesn't fit with my earlier experiences with green teas. I brewed it
for 3 minutes in 180 degree water.

When I recently brewed a cup of Earl Greyer from TROT, if I brewed it
with too cool (180 degrees) water and for a little too long, it was
also more bitter and astringent than usual (and unpleasant). So this
morning, I used boiling water and made sure to steep it at the low end
of the range, and voila' it was delicious. This is a black tea though,
and my new stuff is green

However, my understanding is that when brewing green teas you are
supposed to use cooler water, and 180 should be about right. I *tend*
to prefer my teas steeped less, but not always.

Anyway, what are your recommendations for brewing this tea?
Cathy Weeks