I think I'm pretty much done with that thread. To assume that the product is a "golden alkaloid syrup" is premature at best. Actually, when I quoted a 25% recovery, I was being rather kind. I expect far less recovery than that since I doubt that cold ethanol will touch alkaloid salts present in the tobacco. Then there's the lack of cellular disruption that comes from simply dumping a solvent over tobacco. Powdering the tobacco might help, but powdered tobacco would also give up more of the gunk. I've said it before, soaks are self-limiting.