Fix blokes drinks at the outset… (4)
I believe the answer is:
mend
'fix' is the definition.
('mend' can be a synonym of 'fix')
'blokes drinks at the outset' is the wordplay.
'blokes' becomes 'men' (I've seen this in other clues).
'at the outset' suggests taking the first letters.
The initial letter of 'drinks' is 'd'.
'men'+'d'='MEND'
(Other definitions for mend that I've seen before include "Fix, repair" , "Put right" , "'Restore, fix (4)'" , "Heal" , "Make improvements" .)