Freezing; beer (6)

I believe the answer is:

bitter

This clue is a double definition.

'freezing' is the first definition.
(thesaurus)

'beer' is the second definition.
(bitter is a type of beer)

(Other definitions for bitter that I've seen before include "Intensely cold, beer" , "Acerbic" , "Type of beer" , "Act nervously" , "Sour like some English beer" .)

I've seen this clue in The Times.

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