Nice beer, a lager almost drunk (9)
I believe the answer is:
agreeable
'nice' is the definition.
(I've seen this before)
'beer a lager almost drunk' is the wordplay.
'almost' means to remove the last letter (most of the word but not all of it).
'drunk' is an anagram indicator.
'beer'+'a'+'lager'='beeralager'
'beeralager' with its final letter taken off is 'beeralage'.
'beeralage' is an anagram of 'AGREEABLE'.
(Other definitions for agreeable that I've seen before include "Pleasant, acceptable" , "sympathetic" , "Pleasant, pleasing" , "In harmony; pleasant" , "delightful" .)