Mood brought about by drink? (7)
I believe the answer is:
spirits
This clue is a double definition.
'mood' is the first definition.
(thesaurus)
'drink?' is the second definition.
(I know that spirits is a type of alcoholic beverage)
'brought about by' acts as a link.
(Other definitions for spirits that I've seen before include "Morale" , "whiskeys?" , "hard stuff?" , "eg Gin, whisky" , "Hard liquor" .)