1. Boil beef bones with two bay leaves, and two beef bouillon cubes in a pot of water and simmer for two hours. Add water if necessary.
2. Once the broth is done, remove the bones. Add the carrots, onions, and potatoes and simmer for five minutes. Then add the macaroni and simmer another five minutes. Then add the remaining ingredients.
3. Garnish with freshly grated Parmesan cheese, if desired
Tip: Minestrone is a flexible recipe. You can add or remove vegetables to suit your tastes.