Alcohol taster in audition? (6)

I believe the answer is:

liquor

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'alcohol' is the definition.
(I know that liquor is a type of alcohol)

I can't explain the rest of the clue.

(Other definitions for liquor that I've seen before include "Alcoholic spirits" , "Any alcholic drink" , "Strong alcoholic spirit" , "'Hard' drink" , "Alcoholic beverage" .)

I've seen this clue in The Telegraph.

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