Wash the asparagus, peel and cut off the woody ends. Boil 4 litres of water with 1 teaspoon salt. ##Lemon## wash hot, grate dry, peel with a zest ripper. Halve lemon, cut 1 half into 4 slices, cut remaining lemon into slices. Add sugar and lemon slices to the water. Cook the asparagus for 10-15 minutes. Melt the fat in a saucepan.
Stir in flour and sweat briefly. Add stock and ##milk## while stirring. Bring to the boil, boil for 3-5 minutes and season with salt and pepper. Finely chop the lemon zests. Add cheese and lemon zest to the sauce and stir in. ##Peel, wash and roughly grate the potatoes. Cut 4 slices of ham into strips
Stir in the starch and ham strips. Season with salt and pepper. Remove the finished asparagus and drain well. Arrange on 4 ovenproof plates or dishes. Add the sauce and bake in the preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for 15-20 minutes. Heat 2 tablespoons of oil in a frying pan. Add 4 tbsp.
potato mixture, form into 4 small Rösti and fry over a low heat for approx. 5 minutes. Turn the Rösti halfway through the frying time. Keep the finished Rösti warm. Fry the remaining 12 Rösti with 2 tbsp. oil in the same way. Arrange asparagus, Rösti, remaining ham and lemon wedges. Sprinkle with pink berries