… fish served cold, absolutely delicious for starters (4)
I believe the answer is:
scad
'fish' is the definition.
(scad is a kind of fish)
'served cold absolutely delicious for starters' is the wordplay.
'for starters' indicates taking the first letters.
The initial letters of 'served cold absolutely delicious' is 'SCAD'.
(Other definitions for scad that I've seen before include "Jack" , "fish" , "A lot of money for American" .)