Hmm -

Not for sure on that one for I personally use tea bags and pour the water over the bag after it has come to a boil in my tea pot.... plus I just it soak for 1-2 minutes (no more).

How do you drink your tea? - I like mine English style, with milk and sugar..... or some times I replace the milk with flavored CoffeeMate - yum yum.

LoVe,
Rhapsody -

P.S.
I will do some research and try to find the answer to your question.