Crossword Genius

Dairy product, something of high quality, taken on by type of cat? (8,6)

Ross

I believe the answer is:

cheshire cheese

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

'dairy product' is the definition.
(Cheshire cheese is an example)

'something of high quality taken on by type of cat?' is the wordplay.
I cannot really see how this works, but
'on' could be 're' (regarding) and 're' is found in the answer.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?

I've seen this clue in The Independent.
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