Liquor served to man, laid up before a party (11)
I believe the answer is:
amontillado
'liquor served to man laid' is the definition.
I can't tell whether this defines the answer.
'up before a party' is the wordplay.
'up' becomes 'amon' (I can't explain this - if you can you should give a lot more credence to this answer).
'before' becomes 'till'.
'party' becomes 'do' (do can informally mean a party).
'amon'+'till'+'a'+'do'='AMONTILLADO'
Can you help me to learn more?
(Other definitions for amontillado that I've seen before include "Kind of sherry" , "Medium-dry sherry" , "Medium dry sherry" , "Here's sherry" , "Type of sherry" .)