Ristorante dish (8)
I believe the answer is:
calamari
'ristorante dish' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for calamari that I've seen before include "Mediterranean cooked squid" , "Dish of squid" , "Mollusc" , "Squid served as food" , "Battered squid rings" .)