Occasionally, while drinking very bitter tea, I get a headache. It only lasts a brief while (until about five minutes after I finish the cup), but it’s intermittent. I can drink the same tea the next day, but steep it a little less so it’s not as bitter, and it’s fine.
Now I know that I should monitor my steeping time, but sometimes I throw the leaves in there and get called away from my desk, or I leave 'em a little too long, or I got lazy and never washed out my mug. (Although I got one today, and I had washed out my mug beforehand.
If the type of tea matters, it’s Imperial Earl Grey.
Any idea what’s causing this? Normally I’m pretty headache immune…