Wash potatoes thoroughly and boil in water for about 20 minutes. Quench, peel and let cool down a little.
Wash the asparagus and cut off the woody ends generously. Cook the asparagus in little boiling salted water with a little sugar for 3-5 minutes. Drain and allow to drain.
Finely grate the cheese. Mix with cream and milk. Season with salt, pepper and nutmeg. Grease a flat casserole dish (approx. 26 cm Ø).
Cut the potatoes into slices and place them in the form. Halve the asparagus lengthwise and place on top in a star shape. Pour cheese cream over it. Bake gratin in the preheated oven (electric cooker: 175 °C/circulating air: 150 °C/gas: level 2) for 30-40 minutes until golden brown.
Finally garnish with fresh herbs.