Concerning a bishop? Mince pies and varnish resin? (9)

I believe the answer is:

episcopal

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'concerning a bishop? mince pies and varnish resin?' is the definition.
I can't tell whether this defines the answer.

'mince pies and varnish resin?' is the wordplay.
'mince' indicates an anagram.
'and' means one lot of letters go next to another.
'varnish resin?' becomes 'copal' (I've seen this in another clue).
'pies' anagrammed gives 'epis'.
'epis'+'copal'='EPISCOPAL'

Can you help me to learn more?

(Other definitions for episcopal that I've seen before include "To do with bishop - maybe Pepsi-Cola" , "Scottish Church" , "Governed by bishops" , "Alice's pop? (anag)" , "controlled by bishop" .)

I've seen this clue in the Sydney Morning Herald.

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