Hmmm. Hard to describe Borogu as different. It's one of the most common kava types imported out of Vanuatu. It makes the basis for Fire Island, Black Sands, White Sands, Stone, WOW, and Shaman from Nakamal@Home.
You'll have to ask Adi what he's supercritically extracting, but I thought it was the same stuff as the kava powder - cultivated Hawaiian kava, not primitive ISA Tuday uberkava.
I don't think it's a Kavain sensitivity if you're OK with Fijian, although the major kavalactone in that stuff is methysticin, which nonpluses me something fierce, although perhaps I should give it another look as a potent and non-toxic NF-jB inhibitor from kava, potentially responsible for kava’s chemopreventive activity.