Soak porcini mushrooms in 1/2 litre of cold water. Halve 4 slices of bacon. Finely dice remaining bacon and fry until crispy. Wash parsley and chop finely. Drain porcini and collect the liquid.
Finely chop porcini . Put the diced bacon, except for 1 tablespoon, in a bowl. Add parsley and porcini. Season with pepper. Cut a pocket in the medallions and add some filling.
Wrap bacon around it and pin it with wooden skewers. Heat oil in a pan. Brown the medallions in it and fry them at medium heat for another 12-15 minutes. Clean and halve the mushrooms. Clean, wash and cut leek into rings.
Take out medallions, season with salt and pepper and keep warm. Fry the mushrooms and leek briefly in the frying fat. Add mushroom water, bring to the boil and cook for 5 minutes. Meanwhile cook the noodles in boiling salted water for about 10 minutes.
Add cream to the sauce, sprinkle in the sauce thickener while stirring and bring to the boil. Season to taste with salt and pepper. Drain the pasta. Arrange medallions, noodles and creamed vegetables on a plate. Garnish with parsley.