Crossword Genius

Artificial gin drunk at Glastonbury? (7)

Ross

I believe the answer is:

camping

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

'drunk at glastonbury?' is the definition.
The definition suggests a singular noun which matches the answer.

'artificial gin' is the wordplay.
I cannot quite understand how this works, but
an anagram of 'gin' is 'ing' which is within the answer.
The remaining letters 'camp' is a valid word which might be clued in a way I don't see.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?

(Other definitions for camping that I've seen before include "leisure activity" , "Bivouacking" , "Living in a tent" , "Taking temporary shelter" , "Type of holiday" .)

I've seen this clue in The Independent.
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