Years ago Halo sent out free bottles of Kringle's Curse with orders at Christmas.
I'm not usually into peppermint, minty, or menthol liquids but hey, it was Christmas.
I could not get that flavor out of a Russian 91% to save my life!
I soaked it forever in Everclear, boiled it, you name it I tried it.
It affected every liquid I ever tried to put in it. It complemented a couple, but mostly it just ruined the flavor profiles.
I pulled that old Russian out a couple of years later and it STILL smelled like that curse of old Kringle.
That was an expensive learning experience.