Pour 500 ml of boiling water over dried mushrooms and soak in it for about 30 minutes. Clean, wash and chop the wild mushrooms finely, up to 50 g.
Peel shallots and garlic and dice finely. Heat butter and 1 tablespoon of oil, sauté shallots and garlic for about 5 minutes. Add chopped wild mushrooms, cover and cook over low heat for about 5 minutes.
Pour the soaked porcini mushrooms into a sieve, collecting the soaking water. Chop the porcini. Add the porcini, soaking water, broth and sherry to the pot. Bring to the boil and simmer for about 20 minutes.
In the meantime, cut the remaining mushrooms in half or in slices for garnishing. Heat 2 tablespoons of oil in a frying pan, sauté the mushrooms in it, put aside.
Finely puree the soup with a blender. Season to taste with salt and pepper. Wash parsley, shake dry, pluck off leaves and chop coarsely.
Arrange the soup, spread the mushrooms on top, sprinkle with cream and 2 tablespoons of oil and sprinkle with ground pepper and parsley.