Wash and dice the zucchini and cucumber. Wash and cut the spring onions. Peel and dice the onion and garlic.
Sauté the onions and spring onions in oil. Add the zucchini, cucumber and water or stock and simmer for 10 minutes or until the desired firmness is reached. Stir in the tomato paste, then the sour cream and lovage. Warm up and season everything.