Crossword Genius

Cuba libre ingredient (4)

Ross

I believe the answer is:

coke

'cuba libre ingredient' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Other definitions for coke that I've seen before include "Carbonised fuel residue" , "Fuel made from coal" , "Fuel derived from coal" , "Furnace fuel" , "Drink - drug - solid-fuel product" .)

I've seen this clue in The New York Times.
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