Italian Wedding Soup

Name: Italian Wedding Soup
Ingredients: 1 small onion, grated; 1/3 cup chopped fresh Italian parsley; 1 large egg; 1 teaspoon minced garlic; 1 teaspoon salt; 1 slice fresh white bread, crust trimmed, bread torn into small pieces; 1/2 cup grated Parmesan; 8 ounces ground beef; 8 ounces ground pork; Freshly ground black pepper; 12 cups low-sodium chicken broth; 1 pound curly endive, coarsely chopped (1 pound of escarole would be a good substitution); 2 large eggs; 2 tablespoon freshly grated Parmesan, plus extra for garnish; Salt and freshly ground black pepper