Wow,
That was very interesting, Mari, thank you!!
I also remember something about phenol content in tea, and across types of tea, affecting the rate of absorption of caffeine (and therefore the relative "joltiness" and duration of the effect). I either read this a long time ago, or my mother read it and told me.
I'm going to look that up and see if I can confirm it. I wonder now, if it is another myth.
waves