Arancine Saffron Rice Balls

Name: Arancine (Saffron Rice Balls)
Ingredients: 3 tbsp. olive oil; 1/2 small yellow onion, minced; 1/2 small carrot, minced; 1/2 rib celery, minced; 3 oz. ground beef; 3 oz. ground pork; 1 cup tomato sauce; 2 tsp. tomato paste; 1 small red onion, minced; 1 1/2 cups arborio rice; 1/4 tsp. crushed saffron; 2 tbsp. grated Parmesan; Kosher salt and freshly ground black pepper, to taste; 1/4 cup flour; 2 eggs; 2 cups bread crumbs