Something special English found in Italian restaurant (5)
I believe the answer is:
treat
'something special' is the definition.
'english found in italian restaurant' is the wordplay.
'english' becomes 'e' (abbreviation).
'found in' means one lot of letters goes inside another.
'italian restaurant' becomes 'trat' (I've seen this in other clues).
'e' put into 'trat' is 'TREAT'.
(Other definitions for treat that I've seen before include "Entertain - minister - free entertainment" , "Tend" , "Pay for someone's food or entertainment" , "Pay for someone's food or drink or look after them medically" , "Deal with - delightful surprise" .)