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.