Like some Jewish delis (6)
I believe the answer is:
kosher
'like some jewish delis' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for kosher that I've seen before include "Genuine and legitimate (informal)" , "Of food, conforming to Jewish dietary laws" , "In accordance with Jewish law" , "Of food, conforming to requirements of Jewish law" , "Correct ? legitimate" .)