Wash the asparagus. Peel white asparagus, cut off woody ends. Cut the ends off the green one generously.
Mix 125 g flour, eggs and 1/4 l milk to a smooth dough. Season with salt and pepper. Let it swell for about 15 minutes
Preheat oven: electric cooker: 175 °C/circulating air: 150 °C/gas: stage 2. line baking tray with baking paper and push in
Cook white asparagus in 3/8 l boiling, lightly salted water covered with sugar for 15-20 minutes, depending on the thickness. Add green asparagus and cook for about 10 minutes
Stir mineral water into the dough. Remove the tray. Grease baking paper, pour dough on it. Bake in a hot oven for about 15 minutes
Wash the herbs and chop finely. Drain the asparagus and collect the stock. Keep asparagus warm. Heat butter. Sauté 2 tbsp. flour in it until light brown. Add 1/4 l milk and asparagus stock while stirring. Bring to the boil and simmer for about 5 minutes. Stir in herbs. Season sauce with salt and pepper
Remove the pancakes and let them cool down a little. Cover with ham and roll up firmly from the short side. Cut open the pancake roll. Serve with asparagus and herb sauce