Preheat grill for medium heat.
Place the lamb in a large bowl and mix with the mint cilantro oregano garlic sherry vinegar and molasses. Season with cumin allspice red pepper flakes salt and black pepper and mix well. Shape into 4 patties.
Brush grill grate with oil. Grill burgers 5 minutes on each side or until well done. Heat the pita pocket briefly on the grill. Serve burgers wrapped in pitas with feta cheese.