Jerked Leg Of Lamb

Name: Jerked Leg Of Lamb
Ingredients: 2 1/2 tablespoons whole allspice berries; One 2-inch piece of cinnamon stick; 2 teaspoons black peppercorns; 2 whole cloves; 1/3 cup soy sauce; 1 small onion, chopped; 4 garlic cloves, chopped; 2 large scallions, chopped; 2 tablespoons vegetable oil; 2 tablespoons dark rum; 1 tablespoon thyme leaves; 1 teaspoon salt; 1 teaspoon freshly grated nutmeg; 6 1/2 pounds boneless leg of lamb—trimmed, cut into 3 equal pieces and butterflied for even thickness