Last BITE SIZED: the perfect meatball

Name: Last BITE SIZED: the perfect meatball
Cuisine: European, Italian, Mediterranean
Ingredients: 3 slices white bread, crusts removed, about 2 cups; 1/2 cup whole milk; ½ cup finely diced onion; 1 tablespoon olive oil; 4 cloves fresh garlic, finely minced or microplaned; 3 eggs, beaten; ¼ cup freshly grated Pecorino Romano; ¼ cup freshly grated parmigiano reggiano; ¼ cup finely chopped fresh Italian flat leaf parsley; 1 teaspoons salt; ½ teaspoon freshly ground black pepper; 1 pound ground beef; 1 pound ground pork; 1 pound ground veal