Cold beer (6)

I believe the answer is:

bitter

I believe this is a double definition.

'cold' is the first definition.
(similar in meaning)

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

(Other definitions for bitter that I've seen before include "Resentful about English beer?" , "Sour tasting, like English ale" , "Intensely cold, beer" , "Dry ale in the UK" , "drink" .)

I've seen this clue in The Guardian.

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