Friendly drink (7)
I believe the answer is:
cordial
This clue is a double definition.
'friendly' is the first definition.
(similar in meaning)
'drink' is the second definition.
(cordial is a kind of drink)
(Other definitions for cordial that I've seen before include "drink with a fruity flavour" , "Hearty, affectionate" , "7 [HEARTY]" , "Pleasant - soft drink" , "Warmly welcoming to the drink" .)