Thoroughly clean the chanterelles, wash them and let them drain well in a sieve) Wash potatoes thoroughly, cook in boiling salted water for about 20 minutes. Drain, rinse and peel. In the meantime peel and finely dice the onion. Wash the thyme, dab dry and pluck the leaves from the stems. Heat 3 tablespoons of oil in a large frying pan and fry the potatoes until golden brown, turning them over.
Then remove from the pan and set aside. Heat 3 tablespoons of oil in a large pan and fry the chanterelles for 3-4 minutes at high heat. Meanwhile, wash the meat, dab dry and cut into approx. 8 slices. Heat the remaining oil in a second pan and fry the meat on each side for about 2 minutes. Lightly brown the butter in a small pan and add the thyme. Fry potatoes, onions and all chanterelles together for another 4 minutes. Season with salt and pepper. Season meat with salt and pepper as well. Arrange chanterelles, potatoes and vegetables on a plate.
Fry potatoes, onions and all chanterelles together for another 4 minutes. Season with salt and pepper. Season meat with salt and pepper as well. Arrange chanterelles, potatoes and vegetables on a plate. Place medallions on top and add a dash of crème légère. Pour thyme butter over the meat and garnish with thyme