Finely ground beef and pork are combined with a sofrito of onions, carrots, and celery in a velvety tomato base to create this rich, slow-simmered Italian meat sauce. This thick sauce, which is enhanced with a dab of wine for depth and a splash of milk for tenderness, adheres flawlessly to pasta like tagliatelle, producing a hearty, intensely delicious dish. A classic ingredient for real, home-cooked Italian cuisine, it's perfect for layering in lasagna or spooning over polenta.