Crossword Genius

Tavern's purple fruit not popular (7)

Ross

I believe the answer is:

auberge

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'tavern's' is the definition.
(I've seen this before)

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for auberge that I've seen before include "Continental inn" , "Hotel" , "(French) inn or tavern" , "Local" , "restaurant" .)

I've seen this clue in The Guardian.
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