Hi, my uncle sent me on a mission to find a perfect energizing tea for him-the story goes 10 years ago he had some tea at a friend's house that he can't identify, and it gave him immediate energy and mind clarity even though he was really tired, it did not make his heart race and that energy burst stayed with him for couple hours before it started wearing off.
That is pretty much all i know about it-he said the tea did not really have much flavour or colour.
So far i've tried Pu-Erh and Oolong teas, but they don't seem to have similar effect.
A friend of mine suggested that it might have been Longjing or Mao Jian tea, but i have never tried them, so am not sure. as a point of reference, i got him some yerba mate to try and he said that effect of the tea he is looking for is similar to that of yerba mate, but more intense and prolonged.