White wine and soda (8)
I believe the answer is:
spritzer
'white wine and soda' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for spritzer that I've seen before include "Wine/soda drink" , "Wine mixed with sparkling water" , "Drink made of wine and sparkling water" , "Fizzy drink" , "Wine and soda mixture" .)