Some scampi? Excellent dish! (3)
I believe the answer is:
pie
'dish' is the definition.
(I've seen this before)
'some scampi? excellent' is the wordplay.
'some' indicates the answer is hidden within the clue (some of the parts of the word are used).
'PIE' is hidden in the letters of 'scampi excellent'.
(Other definitions for pie that I've seen before include "In the sky, it's a hopeless idea" , "Fruit or meat dish" , "Bird - dish - mixed type" , "something with custard, say" , "See 6" .)