It really depends on the Tea.
The amount of time that the tea steeps will determine it’s strength. I enjoy different teas at varying strengths. I would suggest that when you buy a new tea, as it is steeping, check the taste every minute with a spoon. This way you can blow on it so you won’t burn your tongue!
Let the first cup steep until it’s either too strong or you notice bitter elements that are unpleasant. Then take note of when the tea tastes best to you and write it on the package. Besides, who can tell you how you like your tea better than you!
General Guidlines
Tea Water Temperature Steep Time
Green Tea 160 degrees F 1 – 3 minutes
White Tea 180 degrees F 4 – 8 minutes
Oolong Tea 190 degrees F 1 – 8 minutes
Black Tea Rolling Boil 3 – 5 minutes
Herbal (tisanes) Rolling Boil 5 – 8 minutes