Perfect starter in fabulous meal (6)
I believe the answer is:
supper
'meal' is the definition.
(I know that supper is a type of meal)
'perfect starter in fabulous' is the wordplay.
'starter' says to take the initial letters.
'in' means one lot of letters goes inside another.
'fabulous' becomes 'super' (I've seen this in another clue).
The initial letter of 'perfect' is 'p'.
'p' put into 'super' is 'SUPPER'.
(Other definitions for supper that I've seen before include "Eats late" , "Evening repast" , "Early evening meal" , "singing for this?" , "Light, late, meal" .)