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White Tea: Just under boiling (170-185 F)
Green Tea: Just under boiling (170-185 F)
Oolong Tea: Just under boiling (170-190 F)
Black Tea: Boiling (200-212 F)
Pu-erh Tea: Boiling (200-212 F)
Herbal Teasan: Boiling (212 F)

Steeping Time:
White Tea: 2-3 minutes
Green Tea: 2-3 minutes
Oolong Tea: 2-3 minutes
Black Tea: 3-5 minutes
Pu-erh Tea: 2-3 minutes
Herbal Teasan: 4-6 minutes

Read more :

http://www.numitea.com/pure-tea/steeping-instructions/