Crossword Genius

Dine with doctor wearing fur, a source of delight (4,3,5)

Ross

I believe the answer is:

meat and drink

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'a source of delight' is the definition.
I know nothing about this answer so I can't tell whether this works.

'dine with doctor wearing fur' is the wordplay.
'dine' becomes 'eat' (eat a meal).
'with' becomes 'and'.
'doctor' becomes 'd' (eg in PhD, Doctor of Philosophy).
'wearing' indicates putting letters inside.
'fur' becomes 'mrink' (I can't explain this - if you can you should give a lot more credence to this answer).
'eat'+'and'+'d'='eatandd'
'eatandd' going into 'mrink' is 'MEAT AND DRINK'.

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I've seen this clue in The Times.
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