Crossword Genius

Unreal chef cooked something that's supposedly never available (1,4,5)

Ross

I believe the answer is:

a free lunch

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

'that's supposedly never available' is the definition.
(there's no such thing as a free lunch)

'unreal chef cooked' is the wordplay.
'cooked' indicates an anagram.
'unreal'+'chef'='unrealchef'
'unrealchef' with letters rearranged gives 'A FREE LUNCH'.

'something' is the link.
I am not very happy about this link. It may be part of another bit of the clue.

Can you help me to learn more?

I've seen this clue in The Guardian.
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