Replica drink (6)
I believe the answer is:
double
This clue is a double definition.
'replica' is the first definition.
(thesaurus)
'drink' is the second definition.
(I have seen 'Large drink' mean 'double' so perhaps 'drink' could also mean 'double')
(Other definitions for double that I've seen before include "Lookalike; twofold" , "with which darts player gets leg over?" , "Second charge for the same offence" , "Offence of leaving one's car where it blocks another" , "Designed for two users" .)