Cryptic clues as to what's cooking? (9)

I believe the answer is:

cassoulet

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'cooking?' is the definition.
Both the answer and definition are singular nouns.
Perhaps there's an association between them I don't understand?

'cryptic clues as to' is the wordplay.
'cryptic' indicates an anagram (a cryptic or obscure order of the letters).
'clues'+'as'+'to'='cluesasto'
'cluesasto' anagrammed gives 'CASSOULET'.

'what's' acts as a link.

Can you help me to learn more?

(Other definitions for cassoulet that I've seen before include "dish" , "French stew made with meat and beans" .)

I've seen this clue in The Independent.

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