Place where its right to cook a meal (5)

I believe the answer is:

realm

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'place where its' is the definition.
I can't judge whether this definition defines the answer.

'right to cook a meal' is the wordplay.
'right' becomes 'r' (common abbreviation).
'to cook' is an anagram indicator.
'meal' anagrammed gives 'ealm'.
'r'+'ealm'='REALM'

Can you help me to learn more?

(Other definitions for realm that I've seen before include "Lamer (anag.)" , "Land under a king or queen" , "the UK, perhaps" , "region" , "Empire - state" .)

I've seen this clue in The Irish Independent.

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