Elliot some flavour? (4)

I believe the answer is:

herb

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'flavour?' is the definition.
Although both the answer and definition are singular nouns, I can't understand how they can define each other.

I don't understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for herb that I've seen before include "Savoury plant" , "bay perhaps" , "Eg, sage" , "eg Thyme, basil" , "Marjoram, say" .)

I've seen this clue in the Sydney Morning Herald.

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