Pluck parsley leaves from the stalks, wash and chop finely. Clean the porcini mushrooms. For larger porcini remove the sponge. Clean porcini carefully with a brush or kitchen paper.
Possibly peel the stems thinly. Cut the mushrooms into slices. Season meat with salt and pepper. Heat 2 tablespoons of olive oil in a pan, fry the medallions for about 3 minutes on each side. Remove and wrap in aluminium foil.
Add 1-2 tablespoons of olive oil to the cooking fat and fry the porcini mushrooms until golden brown. Deglaze with lemon juice and remove. Slice the parmesan. Arrange porcini mushrooms and medallions on plates. Drizzle with the broth and sprinkle with parsley and parmesan.
Garnish with parsley and lemon wedges. Ciabatta bread tastes good with it.