Wash the potatoes and cook in boiling water for about 15 minutes. Drain and peel. Wash the asparagus and cut off the woody ends. Cook the asparagus in plenty of boiling salted water for about 12 minutes at low heat. In the meantime, wash the meat, dab dry and cut into 3-4 cm thick slices. Wrap a slice of bacon around each slice. Fry in 1 tablespoon of hot oil on each side for about 3 minutes.
Season with salt and pepper. For the sauce take off 1/8 litre asparagus stock. Stir in sauce powder and bring to the boil. Beat the fat in flakes over low heat. Season to taste with mustard and lemon juice. Fry the potatoes in the remaining hot oil for about 7 minutes, turning them until golden brown. Serve garnished with asparagus, meat and sauce and, if desired, with tomato florets, dill, lemon wheels and grated lemon peel