To me the predominant taste and smell is more reminiscent of cut grass which has been left to sit on the lawn for about 4 days that has dried and began to rot. I find this works in cocktails that have strong flavors that can cover that vegetal rot funk.
I added 1/4 oz rich Demerara syrup to this and it was much, much better! Helped bring out the Tuaca which was getting overrun by the cachaça and helped tame the days old rotting cut grass funk.