Wash the potatoes and cook covered for about 20 minutes. Quench, peel and let cool
Wash and peel the asparagus and cut off the woody ends. Cook the asparagus in boiling, lightly salted water covered with 1 teaspoon sugar for 15-20 minutes
Lift out the asparagus and let it drip off. Measure 1/8 l asparagus stock and pour into a pot. Stir in sauce powder and bring to the boil. Add cream and bring to the boil again. Remove from the heat and beat butter in pieces. Season to taste with salt, pepper and lemon juice
Cut the potatoes into slices and place them on 4 small ovenproof plates or in a large casserole dish. Season with salt and pepper. Wrap 4-6 asparagus spears in 1 slice of ham and place on top. Pour sauce over them. Sprinkle with cheese
Bake in the preheated oven (electric oven: 200 °C/recirculating air: 175 °C/gas: level 3) for 15-18 minutes until golden brown
Drink: cool white wine