Season fillet with salt and pepper. Fry in a large pan in 2-3 tablespoons of hot oil for about 10 minutes. Take out. Put the pan aside
Clean and wash mushrooms. Cut mushrooms into slices, halve or quarter chanterelles. Clean, wash and cut leek into fine rings
Heat 2 tablespoons of oil in the frying fat. Sauté the mushrooms in it. Season, take out. Brown the leek, season. Sprinkle with flour and sauté briefly. Stir in 3/8 l water, cream and stock, bring to the boil. Wash and chop the marjoram. Add with mushrooms. Simmer for about 6 minutes.
Put bread on the fat pan. Cut the fillets into 16-20 thick slices and place them on top with sauce. Sprinkle with cheese. Bake in a hot oven (electric cooker: 200 °C/ convection oven: 175 °C/gas: level 3) for 10-15 minutes
Drink: cool cider