For the cabbage soup, cut the leek into rings and wash well. Finely chop the garlic. Chop the cabbage, carrots and celery. Chop the celery leaves.
Sauté the leeks in hot olive oil, briefly sauté the garlic and add the soup. Add cumin, anise, fennel, ginger, cabbage, carrots, celery and lemon juice and simmer for 20-30 minutes.
Season to taste and serve sprinkled with the celery leaves.