I have recently acquired a nice bag of Vanilla Green tea in bagged form instead of loose leaf. Before adding water, it smells delightful, some of the best tea I have smelled in a while. But after I add water, that sweet sort of scent completely disappears, and I'm left with this sort of tart scent, and the tea tastes tart and has a sort of yellowish color. Am I doing something wrong while trying to make this? Thanks!
Edit: Also, at the bottom of my teacup there is some sort of black powdery stuff. I do not add anything to my tea at all. So not entirely sure what that is :/