Iron pot for cooking some food (7)

I believe the answer is:

portion

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'some food' is the definition.
The answer and definition can be both things that one consumes for nourishment as well as being singular nouns.
Maybe there's an association between them I don't understand?

'iron pot for cooking' is the wordplay.
'for cooking' indicates an anagram.
'iron'+'pot'='ironpot'
'ironpot' anagrammed gives 'PORTION'.

Can you help me to learn more?

(Other definitions for portion that I've seen before include "Part - share" , "Piece of a whole" , "Segment" , "allotment" , "Part of a whole" .)

I've seen this clue in The Sun.

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