Wine in Bordeaux, it's OK (4)
I believe the answer is:
cava
'wine' is the definition.
(type of Spanish wine)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for cava that I've seen before include "Spanish sparking wine" , "Spanish fizz" , "Spanish "champagne"" , "Sparkler" , "sparkling drink" .)