The past few times I brewed this, I thought it tasted really sharp and harsh – almost heartburn inducing. This made me want to toss the whole mix out, since I still have a whole bunch of the two unblended varieties of mint, and I thought the harshness came from mixing them together.
Then I checked the label for each type of mint and realized I’d been oversteeping by at least TWICE the recommended length of time. >_<
So I’ve learned my lesson: try and keep it to a minute, tops. This time it’s been much better, though I did make sure to add a spoonful of honey.