This 3 sentence summary provides the key details about making a classic tomato ragu: The recipe calls for sautéing onion and garlic in oil before adding canned chopped tomatoes and fresh basil to simmer for 30 minutes, producing a tomato sauce that can be served with pasta. Optional additions include dried herbs, chili, mushrooms, courgette or browned ground beef to make the sauce meat-based. The basic tomato sauce can also be poured over fish, topped with cheese and baked.