Makes bubbly (7)
I believe the answer is:
aerates
'makes bubbly' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for aerates that I've seen before include "Puts fizz into a drink" , "Pumps carbon dioxide into" , "Adds carbon dioxide to liquid under pressure" , "fans" , "Brings gas" .)