Put in liquor barrel, son's left to get plastered (5)
I believe the answer is:
caked
'plastered' is the definition.
'put in liquor barrel son's left' is the wordplay.
'put in liquor barrel' becomes 'casked' (put in a cask).
'left' suggests deleting specific letters (some letters have left).
'casked' with 's' taken out is 'CAKED'.
'to get' is the link.
(Other definitions for caked that I've seen before include "Thickly smeared" , "Covered with mud" , "laid on thick" , "Made hard" , "sponged?" .)