Choice brew, but with deferred power (6)

I believe the answer is:

option

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'choice' is the definition.
(I know that choice can be written as option)

I can't explain the rest of the clue.

(Other definitions for option that I've seen before include "Choice of portion" , "Thing that may be chosen" , "Something choosable" , "The choice of taking or leaving" , "Freedom to choose" .)

I've seen this clue in The Independent.

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