Wash the asparagus and cut off the woody ends generously. Cut the asparagus diagonally into long thin slices. Cook in boiling salted water with 1 tsp. sugar for about 2 minutes. Drain, quench and drain well.
Clean, wash and cut the spring onions into rings. Heat oil in a pan. Fry the ground pork in it until crumbly. Season with salt and pepper if necessary. Fry the spring onions briefly.
Preheat oven (electric cooker: 225 °C/circulating air: 200 °C/gas: see manufacturer). Grate Parmesan cheese. Peel garlic and chop very finely. Mix sour cream and garlic.
Unroll the dough and place it on a baking tray together with the baking paper. Spread evenly with garlic cream, leaving a small rim all around. Spread the asparagus and the mead/leek and onion mixture on top.
Set aside 1 tablespoon of parmesan and sprinkle with the rest. Bake in a hot oven for about 15 minutes. Remove and sprinkle with the rest of the Parmesan.