Guild Wars 2

Where, what and how is the most efficient way to get/farm Vials of Powerful blood. Besides using the TP.

I’ve already crafted my Exotic Weapon, and am now working on my armor set. Would like to know where I can just focus on this material only.

The trolls in the crevice near Jormag’s claw would be pretty good farming, they’re all level 80 and all melee so it’s easy to corral them and AE, I say “would” because they’re pretty heavily camped most of the time