Beer and lemonade mixture (6)
I believe the answer is:
shandy
'beer and lemonade mixture' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for shandy that I've seen before include "Alcohol" , "Drink made of beer and lemonade" , "Beer/lemonade mixture" , "Beer/lemonade drink" , "A misture of ale and lemonade" .)