Pappardelle with Duck Sugo

Name: Pappardelle with Duck Sugo
Ingredients: 2 1⁄2 cups duck or chicken stock; 1⁄4 cup dried porcini mushrooms; 1⁄2 cup roughly chopped parsley, plus 2 tbsp. finely chopped; 2 tbsp. rosemary leaves; 3 large sage leaves; 2 cloves garlic, peeled; 2 stalks celery, roughly chopped; 1 small yellow onion, roughly chopped; 1⁄4 cup olive oil; 2 lb. whole duck legs; Kosher salt and freshly ground black pepper, to taste; 1⁄2 cup dry white wine; 6 oz. fresh or dried pappardelle; 1⁄2 cup grated parmesan