Improvise, serving some chicken with vermouth (4,2)
I believe the answer is:
wing it
'improvise' is the definition.
(I've seen this in another clue)
'some chicken with vermouth' is the wordplay.
'some chicken' becomes 'wing' (chicken wing).
'with' says to put letters next to each other.
'vermouth' becomes 'it' (short for 'Italian vermouth' as in 'gin and it').
'wing'+'it'='WING IT'
'serving' is the link.
(Other definitions for wing it that I've seen before include "Perform without any preparation" , "Improvise" .)