Faygo or Fanta (4)
I believe the answer is:
soda
'faygo or fanta' is the definition.
(I know that Faygo is a soda)
This is the entire clue.
(Other definitions for soda that I've seen before include "Sodium carbonate" , "fizz" , "for use with whisky?" , "pressurised liquid" , "Fizzy water, goes well with whiskey" .)