Coffee liqueur (3,5)
I believe the answer is:
tia maria
'coffee liqueur' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for tia maria that I've seen before include "Coffee-flavoured trademarked liqueur" , "Coffee-flavoured rum drink" , "After-dinner liqueur" , "Coffee flavoured liqueur" , "Rum-based coffee liqueur" .)