Italian Rice Balls (Arancini)

Name: Italian Rice Balls (Arancini)
Prep time: 30 min
Cook time: 1 h 5 min
Total time: 1 h 35 min
Cuisine: Italian
Ingredients: 3 tablespoons salted butter; 1 tablespoon olive oil; 1/2 cup diced onion; 2 garlic cloves (minced); 1/2 cup white wine; 1 1/2 cups long-grain white rice (we used Jasmine); 1 teaspoon chopped fresh parsley; 1 teaspoon chopped fresh oregano; 1 teaspoon chopped fresh basil; 4 cups chicken broth (divided); 1/2 cup freshly grated parmesan cheese (plus more for garnish); salt and pepper (to taste); 8 ounces mozzarella cheese (cut into 18 chunks); 1 cup all-purpose flour; 3 large eggs (beaten); 1 1/2 cups Italian-style breadcrumbs; Vegetable oil for frying