Word after "went" or "whiskey" (4)

I believe the answer is:

sour

(Other definitions for sour that I've seen before include "'Having a sharp, biting taste (4)'" , "Bitter, tart" , "Acid-tasting" , "Disparagement of something one can't have oneself" , "Acrid or sullen" .)

I've seen this clue in the Universal.

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