Roast Leg of Lamb with Spring Onions and Mint

Name: Roast Leg of Lamb with Spring Onions and Mint
Ingredients: 1 (4 pound) semi boneless leg of lamb, trimmed of excess fat; 1 bunch spring onions or 4 large leeks, white and light green parts only, roughly chopped; 1 large bulb fennel, cored and thinly sliced; 1 tablespoon cracked black pepper; 1 tablespoon plus 2 teaspoons extra virgin olive oil, divided; 1/2 cup chopped fresh mint; 1/2 teaspoon fine sea salt; 1/4 cup dry white wine or water; 2 tablespoons fennel seeds; 6 cloves garlic