1. Peel the carrot and cut it into small dice. Finely slice the onion and celery stalks. Gently sauté these vegetables in a pot with olive oil; also add the bacon bits.
2. Cut the potato and the zucchini (unpeeled) into small dice; cut the snap beans into small pieces. Add everything to the pot and let it sauté for a few minutes.
3. Cut the tomatoes into small dice. Pour 1.5 liters of hot water over the vegetables, add the pressed garlic clove, crumbled bouillon cubes, basil, and parsley.
4. Add the small tomato dice. Bring to a boil and let it simmer for about twenty minutes.
5. Meanwhile, cook the pasta shells in salted boiling water.
6. When the minestrone is ready, adjust the seasoning. Put a few spoonfuls of cooked pasta in a deep plate and cover it with the minestrone.
7. Serve immediately, optionally accompanied by crusty bread and grated fresh cheese or Parmesan.