Ha! yeah Hamo that was my vote.
BUT I wonder how many people would want to join in if the ingredient picked is something like Malort liqueur that is said by one person to "taste like gasoline" don't know if I want to buy a whole bottle of that.
Maybe if you or somebody else does go forward with this a vote on the ingredient would work best.
I would try to join in on the ones where I might have the ingredient or could get something I could use in other stuff.
What goes with the flavor profile of gasoline?
How often do you use that bottle of Pernod anise-flavored liqueur.
Never been a big fan of the flavor of anus.