Force and twist top off vermouth? (6)

I believe the answer is:

french

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'vermouth?' is the definition.
(French vermouth is an example)

I can't explain the rest of the clue.

(Other definitions for french that I've seen before include "Continental language (Polish?)" , "Glass door" , "The losers at Agincourt" , "A Romance language" , "From Paris possibly" .)

I've seen this clue in The Independent.

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