4 slices plain white bread, torn into large pieces (about 2 packed cups)
2 pounds ground beef (90 percent lean, no fattier)
3 medium garlic cloves, minced
1/4 cup finely chopped fresh Italian parsley leaves
1/4 cup finely grated Pecorino Romano, plus more for serving
1/4 cup pine nuts
1/4 cup raisins
1 1/2 teaspoons fine salt
15 turns freshly ground white pepper
4 large eggs
1/2 cup dried plain breadcrumbs
12 cups (3 quarts) tomato sauce, such as our Basic Tomato Sauce