I got a free sample of this with an order from Norbu, and it’s a pretty nice tea. I’ll be ordering more with my next order.
I did a detailed review of it compared to another Taiwain black tea here:
I did two rounds of tasting—one dilute (1 gram to 2 oz boiling water) and one more concentrated (2.5 grams to the same), and found it was still not bitter at the more concentrated level. Fruity, sweet, nice. But I would not let it sit, because bitterness can develop if the steeped tea waits too long.