Flavouring used by a flea (7)

I believe the answer is:

bayleaf

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'flavouring' is the definition.
I know nothing about this answer so I can't judge whether it can be defined by this definition.

'used by a flea' is the wordplay.
'used' indicates an anagram.
'by'+'a'+'flea'='byaflea'
'byaflea' is an anagram of 'BAYLEAF'.

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I've seen this clue in The Daily Express.

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