Clean the mushrooms, place them in a saucepan and sweat them dry. Strain them and allow them to drip completely dry through a sieve. Then sauté them golden brown in butter and season them with salt and black pepper.
Wash the lettuces and let them drip dry. Tear them up into a bowl and dress them with olive oil, salt and balsamic vinegar just prior to serving. Put the mixed salad in mounds on the plates and lay the mushrooms on them directly from the pan. Garnish with onion flowers, crown dill, dill sprigs or chopped dill.