A new suggestion regarding appetiser (9)
I believe the answer is:
antipasto
'appetiser' is the definition.
(I've seen this before)
'a new suggestion regarding' is the wordplay.
'a new' becomes 'an' (I've seen this in other clues).
'suggestion' becomes 'tip' (tip is a kind of suggestion).
'regarding' becomes 'asto'.
'an'+'tip'+'asto'='ANTIPASTO'
(Other definitions for antipasto that I've seen before include "Italian appetiser" , "course of hors d'oeuvres" , "Italian hors d'oeuvres" , "Appetizer course in an Italian meal" , "dishes" .)