Brush the potatoes vigorously under cold water. Wash and peel the asparagus and cut off the woody ends. Wash the meat, pat dry and wrap with bacon. Possibly get stuck
Cover the potatoes and cook for about 20 minutes. Quench and let cool. Meanwhile, cook the asparagus in boiling, lightly salted water, covered with sugar, for 15-20 minutes
Heat clarified butter in a coated pan. Fry the medallions for 4-5 minutes on each side. Season with salt and pepper. Remove and keep warm. Fry the potatoes in cooking fat, turning them golden brown and then salt them.
In the meantime, whisk the egg yolks, cream and 1 pinch of salt with the whisk of the hand mixer in a hot water bath for 6-8 minutes until creamy. Divide the sauce into 2 portions. Whip under one half of the butter in pieces. Season to taste with mustard, salt and pepper. Season the remaining sauce with orange peel and orange juice
Wash and pluck the chervil. Arrange meat, asparagus, potatoes and sauces. Sprinkle chervil on top