Till now, nobody has found what kind of fruit it. is.
AFAIK , The thing is not comestible
Corresponding pics:

Thing 1
http://cjoint.com/?bhslbxrv2U
Thing 2
http://cjoint.com/?bhslDjYLkq
Thing's leaves
http://cjoint.com/?bhsnKUHaTP

To that thing, the main part (seen cut) and the smaller one seen on
Picture "Thing 2" are attached (same position) to form an assembly of
about 20 cm (7,87 inch) long.

Any information is welcome

TIA