1. Peel the onion and garlic clove.
2. Thoroughly wash the leeks and cut the white parts into rounds.
3. Peel and cut the carrots, turnips, and parsnips into pieces.
4. Trim the ends of the zucchini, cut them lengthwise, remove the seeds if necessary, and cut them into pieces.
5. In a Dutch oven, place the onion studded with cloves and all the vegetables, chickpeas. Cover with water, add the broth, tomato paste, bouquet garni, salt, and pepper.
6. Bring to a boil and simmer covered for about 45 minutes.
Serve hot.