Seeds in powdered crackers (10)

I believe the answer is:

groundnuts

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'seeds' is the definition.
(groundnut is a kind of seed)

'powdered crackers' is the wordplay.
'powdered' becomes 'ground' (I am not sure about this - if you are sure you should believe this answer much more).
'crackers' becomes 'nuts' (synonyms).
'ground'+'nuts'='GROUNDNUTS'

'in' is the link.

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I've seen this clue in The Times.

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