Crossword Genius

Courage and what one might find it in? (6)

Ross

I believe the answer is:

bottle

'courage' is the definition.
(bottle can mean courage)

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

(Other definitions for bottle that I've seen before include "Jeroboam" , "Here's where it's to be found" , "beer found in this?" , "Heart" , "It keeps drink" .)

I've seen this clue in The Independent.
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