Crossword Genius

As favours, prepared to keep in store, packaged (8)

Ross

I believe the answer is:

rosettes

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

'as favours prepared to keep in store packaged' is the definition.
I can't judge whether this defines the answer.

'prepared to keep in store packaged' is the wordplay.
I cannot quite see how this works, but
'prepared' could be 'set' (I've seen this before) and 'set' is found within the answer.
an anagram of 'store' is 'rotes' which is located in the remaining letters.
No letters remain.
This may be the basis of clue (or it may be nonsense).

Can you help me to learn more?

(Other definitions for rosettes that I've seen before include "Badges in the form of flowers" , "Leaves" , "Set store by ornaments made of ribbon" , "Eventing awards" , "Set store on floral badges" .)

I've seen this clue in the Evening Standard.
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