Party piece not bad after fourth of sherries (9)
I believe the answer is:
reception
'party' is the definition.
(reception is a kind of party)
'piece not bad after fourth of sherries' is the wordplay.
'bad' is an anagram indicator.
'after' is a charade indicator (letters next to each other).
'fourth of sherries' becomes 'r' (I can't explain this - if you can you should believe this answer much more).
'piece'+'not'='piecenot'
'piecenot' with letters rearranged gives 'eception'.
'eception' put after 'r' is 'RECEPTION'.
Can you help me to learn more?
(Other definitions for reception that I've seen before include "Formal function" , "How one is greeted" , "Hotel entrance area" , "A social event" , "class of youngsters" .)