Chef's creation (4)
'chef's creation' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for dish that I've seen before include "Receptacle" , "Menu item - plate" , "Scotch" , "Plate and what's served on it" , "Directional antenna -- good-looking woman or man" .)
(Other definitions for menu that I've seen before include "choice of food" , "List of items available in restaurant (4)" , "Choice of dishes" , "Restaurant fare" , "Food programme of restaurant" .)