Crossword Genius

Medical procedure that follows whiskey? (1-3)

Ross

I believe the answer is:

x-ray

I'm a little stuck... Click here to teach me more about this clue!

This clue could be a double definition.

'medical procedure' is the first definition.
The answer and definition can be both acts as well as being singular nouns.
Maybe there's an association between them I don't understand?

'follows whiskey?' is the second definition.
I know that 'whiskey' relates to this answer. I also know that both the answer and definition are singular nouns

'that' is the link.

Can you help me to learn more?

(Other definitions for x-ray that I've seen before include "Rontgen's discovery" , "Hospital diagnostic aid" , "Medical image?" , "Diagnostic picture" , "Aid to medical investigation" .)

I've seen this clue in The Everyman puzzle in The Observer.
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