For the vegetable broth, peel or clean the soup greens, wash and cut into pieces. Peel onions, dice 1 roughly. Heat 1 tablespoon of oil in a large pot. Fry the diced onions and soup vegetables.
Deglaze with wine and 1 l water and bring to the boil. Add bay leaf, peppercorns and about 1/2 teaspoon salt. Simmer at low heat for about 45 minutes. Pour stock through a fine sieve.
Finely dice the remaining onions. Peel, wash and roughly grate the potatoes. Heat 1 tablespoon of oil in a saucepan. Fry the onions in it. Add vegetable stock. Add potatoes. Bring to the boil, cover and simmer for about 10 minutes.
Clean and wash the zucchini and cut them diagonally into very thin slices. Heat 2 tablespoons of oil in a frying pan. Fry the zucchini in it from each side until golden brown, season with salt. Drain on kitchen paper.
Wash the herbs, shake dry and cut coarsely. Add herbs and 100 g cream to the soup, puree everything. Season to taste with salt and pepper.
Whip 100 g cream. Serve the soup. Pour cream in patches and add zucchini chips. Garnish with edible flowers, e.g. horn violets, if desired.