Clean, wash and cut the leek into thick slices. Wash cutlets, dab dry, season with salt and pepper. Place the meat on the steaming tray of the roaster. Fill the roaster with water to a height of approx. 1 cm, insert the steamer insert, cover and steam for 15-20 minutes.
Heat 20 g butter in a frying pan and fry the leek in it for about 8 minutes at low to medium heat. Season with salt and pepper. Halve the lemon and squeeze it. Wash the lemon verbena, shake dry and cut the leaves into strips. Cut 80 g butter into pieces
Heat lemon juice, chicken stock and 80 g butter. Mix the starch and 1 tbsp. water until smooth and stir into the sauce. Let the sauce simmer gently for about 1 minute, then season with salt, pepper and a little sugar. Add lemon verbena. Arrange schnitzel, sauce and leek vegetables on plates