Iv heard of dope being cut with fent before, but Il never understand why. Shit is way harder to come by and mad expensive, doesnt seem too cost effective to throw something like that in your dope. Unless its some crazy chemist who synths it himself and just has volumes of it lying around. I heard somewhere that fent is relatively easy to synthesize, relative to some chems at least.
I get a lot of dark cut with coffee where Im at, sometimes already rocked up but sometimes still in a powder form. that one makes sense, adding one brown powder to another. doesnt taste too bad either, much better than the shitty vinegar tasting garbage that was goin around awhile back.