Roast Leg of Lamb with Orange and Herbs

Name: Roast Leg of Lamb with Orange and Herbs
Ingredients: 2 large garlic cloves, minced; 2 teaspoons finely grated orange zest; 1 tablespoon finely chopped fresh flat-leaf parsley; 1 teaspoon finely chopped fresh rosemary; 1 teaspoon finely chopped fresh thyme; Pinch of ground cumin; 3 tablespoons plus 1 teaspoon olive oil; Salt and freshly ground pepper; One 8 1/2-pound leg of lamb, trimmed of excess fat; 1/2 cup fresh orange juice; 3/4 cup dry white wine; 4 medium onions, peeled and halved crosswise; 8 small carrots, halved lengthwise