INGREDIENTS
6 oz bacon slices, cut into 1/2-inch pieces
1 yellow onion, diced
1 ½ tsp. kosher salt, plus more, to taste
3 garlic cloves, minced
2 lb ground beef
6 oz tomato paste
1 cup milk
1/3 cup grated Parmigiano-Reggiano cheese,
plus more for serving
Freshly ground pepper, to taste
1 lb spaghetti, cooked, water reserved