Person who puts labels on prepared ramen (5)

I believe the answer is:

namer

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'person who puts labels' is the definition.
The definition suggests a singular noun which matches the answer.

'prepared ramen' is the wordplay.
'prepared' indicates an anagram.
'ramen' with letters rearranged gives 'NAMER'.

'on' acts as a link.

Can you help me to learn more?

(Another definition for namer that I've seen is " One giving appellation".)

I've seen this clue in The Telegraph.

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