Crossword Genius

Slick cutlery does not signal these are top-class eateries (6,6)

Ross

I believe the answer is:

greasy spoons

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

'eateries' is the definition.
Both the definition and answer are plural nouns.
Maybe they are linked in a way I don't understand?

'slick cutlery does not signal these are top-class' is the wordplay.
I cannot really see how this works, but
'cutlery' could be 'spoon' (spoon is a kind of cutlery) and 'spoon' is present in the answer.
an anagram of 'are' is 'rea' which is located in the answer.
This explanation may well be incorrect...

Can you help me to learn more?

I've seen this clue in The Irish Times.
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