Comfort from drink -- something alcoholic (7)
I believe the answer is:
support
'comfort' is the definition.
(I've seen this before)
'drink something alcoholic' is the wordplay.
'drink' becomes 'sup' (to sup is to drink).
'something alcoholic' becomes 'port' (I can't justify this - if you can you should believe this answer much more).
'sup'+'port'='SUPPORT'
'from' acts as a link.
Can you help me to learn more?
(Other definitions for support that I've seen before include "Bear; assistance" , "Shore up" , "Uphold" , "Hold up" , "second" .)