Around half of people I give this to say it reminds them of tobacco abs, and the other half usually think it's some sort of alien yet-to-be-realised plum absolute.
 
This is certainly a material that can take some time to get one's head around: at first it undulates with notes of bitter dark chocolate but then at times shows mulchy forest undergrowth. Yet these are not unpleasant transformations but really equite exciting ones, the whole extract remaining pleasant and intriguing from topnotes to drydown traces. 
 
I get this material from Biolandes, who are famous for theirs. If you prefer it as a pre-dissolved solution at 50% in TEC, that's in the options, but it's also available pure and without any solvents for compounding etc.