Produce bypassing a Mediterranean island (5)
I believe the answer is:
crete
'mediterranean island' is the definition.
(I've seen this before)
'produce bypassing a' is the wordplay.
'produce' becomes 'create' (I've seen this before).
'bypassing' is a deletion indicator (to bypass is to avoid).
'create' with 'a' removed is 'CRETE'.
(Other definitions for crete that I've seen before include "Herakleion its big port" , "Large island in Med" , "Largest Greek island" , "Major island south of Greece" , "Greek island, site of the Minoan civilisation" .)