Comment by makeitdouble
3 years ago
If we're talking japanese green tea, 50C for a very gentle taste、70~80C for a full taste are the basic directions, same as you'll get recommended by the tea makers themselves (an english site [0])
190F(85C) requires more timing control and get out the tea after less than a minute, while lower temperatures are more forgiving.
[0] https://www.theteamakers.co.uk/blogs/news/japanese-tea-brewi...
Caution is advised here. Teas can vary wildly from producer to producer, fixing methods and even from year to year and the extraction vessels, brewing methods and even the water heating and temp measuring methods play a significant role.
Anecdotal evidence: The temps for my daily drinker (a deep steamed sencha) this year are 10°C lower (57) than last year. This is after keeping everything else constant.