my friend made a bunch of glycerine tincture with all his trim that is very potent. the bottles of "tobacco" for the e-cig are made with glycerine to extract the nicotine. The exact same process as my buddy used... i bought an e-cig and a bottle of my homeys tincture and got BLAZED out of my mind... it's like the future of the cigarette one hitters, that are so easily concealed. I thought it would be odorless like the tobacco ones are, but when i hit that shit on the train the other day it definitely smelled like chronic... fyi