In the Star Trek: TOS episode "By Any Other Name", Scotty gets alien captor Tomar drunk. Tomar asks him about one particular bottle:
TOMAR: "What is it?"
SCOTTY: "Well, it's… uh…" (Scotty looks at the liquor bottle and sniffs it) "It's green."
What is the green drink in that particular bottle? Films, scripts, novelizations, and licensed works are acceptable sources.
No, I do not want the identity of the similar scene in TNG: Relics, which is identified by Picard as Aldebaran whiskey. That is a different bottle. And don't speculate that they're the same -- sources, please.