Crossword Genius

Obscure spot where dishes are greasy (4,5)

Ross

I believe the answer is:

grey areas

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

'obscure spot' is the definition.
I know nothing about this answer so I can't judge whether this works.

'dishes are greasy' is the wordplay.
'are greasy' can be anagrammed to 'GREY AREAS'.
But, I am not clear how this is indicated.

'where' acts as a link.

Can you help me to learn more?

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