Pork Loin Braised with Mushrooms and Wine

Name: Pork Loin Braised with Mushrooms and Wine
Ingredients: 1 (2-pound) boneless center-cut pork loin, tied with kitchen twine; 1 1/2 teaspoons coarse sea salt; 1/2 teaspoon black pepper; 3 tablespoons olive oil; 1 pound white button mushrooms, quartered; 8 small white spring onions (about 10 ounces), trimmed, white parts only; 3 large garlic cloves, smashed; 1/2 cup (4 ounces) Corsican Muscat wine; 1 cup lower-sodium chicken stock; 3 rosemary sprigs; 6 thyme sprigs; 8 (3-inch) orange peel strips; Cooked polenta, for serving