Find, when you take the wrapper off? (8)

I believe the answer is:

discover

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'find' is the definition.
(I know that find can be written as discover)

I don't understand the rest of the clue.

(Other definitions for discover that I've seen before include "Detect, find" , "Find out about record surplus" , "Be the first to have sight or knowledge of" , "Find during a search" , "turn up" .)

I've seen this clue in the Evening Standard.

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