Ice-cold beer (6)
I believe the answer is:
bitter
This clue is a double definition.
'ice-cold' is the first definition.
(thesaurus)
'beer' is the second definition.
(I've seen this before)
(Other definitions for bitter that I've seen before include "Tart like some English beer" , "Resentful, being piercingly cold" , "severe" , "Acerbic" , "Resentful and cynical" .)