Classic Osso Buco

Name: Classic Osso Buco
Ingredients: 6 cross-cut veal shanks (1½ in. thick and 8–10 oz. each), tied tightly around the equator with twine; Kosher salt and freshly ground black pepper; 1 cup all-purpose flour; 2 Tbsp. vegetable oil; 3 Tbsp. unsalted butter; 2 medium carrots, finely chopped; 2 celery stalks, finely chopped; 2 large onions, finely chopped; 2 Tbsp. tomato paste; 5 thyme sprigs; 3 parsley sprigs plus ⅓ cup finely chopped parsley leaves, divided; 3 cups dry white wine; 1 cup veal stock, or beef stock (optional); 2 bay leaves; 3 Tbsp. finely grated lemon zest; 8 garlic cloves, finely chopped