Herb Mayonnaise Roast Turkey

Name: Herb Mayonnaise Roast Turkey
Ingredients: 1 c. mayonnaise; 1/4 c. dijon mustard; 1/4 c. fresh parsley, chopped, plus 5 sprigs; 1 tbsp. fresh rosemary, finely chopped, plus 2 sprigs; 1 lemon, zest grated, lemon cut into quarters; 4 garlic cloves, finely chopped, plus 1 head garlic, cut in half crosswise; 5 1/2 tsp. kosher salt; 3 1/2 tsp. black pepper; 1 12- to 14-pound turkey, neck and giblets removed; 5 tbsp. all-purpose flour; 1/2 c. white wine; 3 to 4 cups low-sodium chicken or turkey broth