Drunken parties with pineapple and edam starters as canapé (9)
I believe the answer is:
appetiser
'canape' is the definition.
(a canape might be served as an appetiser)
I can't explain the remainder of the clue.
(Other definitions for appetiser that I've seen before include "first course maybe" , "Aperitif" , "Hors d'oeuvre" , "It's served before a meal" , "stimulating food!" .)