Yankee feeds crew unlimited whisky (3)
I believe the answer is:
rye
'whisky' is the definition.
(rye whisky is a kind of whisky)
'yankee feeds crew unlimited' is the wordplay.
'yankee' becomes 'Y' (phonetic alphabet: alpha, bravo, charlie etc.).
'feeds' means one lot of letters goes inside another (one word is fed by another set of letters).
'unlimited' means to look at the middle letters (discard the edges or 'limits' of the word).
The middle of 'crew' is 're'.
'y' inserted within 're' is 'RYE'.
(Other definitions for rye that I've seen before include "Grass; whisky" , "A Cinque Port; a grain" , "Cereal - liquor" , "Cereal grain" , "Drink" .)