Almost kiss sailor for heavenly drink (6)
I believe the answer is:
nectar
'heavenly drink' is the definition.
(I've seen this before)
'almost kiss sailor' is the wordplay.
'almost' means to remove the last letter (most of the word but not all of it).
'kiss' becomes 'neck' (I've seen this before).
'sailor' becomes 'tar' (tar is a kind of sailor).
'neck' with its final letter taken away is 'nec'.
'nec'+'tar'='NECTAR'
'for' acts as a link.
(Other definitions for nectar that I've seen before include "Sweet fluid collected by bees" , "Sugary plant fluid" , "very nice drink" , "Drink of the gods in Greek myth" , "Drink of gods and insects" .)