Wash the asparagus, peel and cut off the woody ends. Cut off asparagus tips and boil in salted water for 4-5 minutes. Remove, rinse briefly in cold water and cut in half lengthwise.
Cut the remaining asparagus into pieces. Halve the leek lengthwise, wash and cut into strips. Peel and chop the onion. Peel and wash the potatoes and cut them into small pieces.
Heat butter in a pot. Sauté onion and leek for 2-3 minutes, then add asparagus and potatoes. Deglaze with milk and stock, season with salt and pepper. Cover and simmer for about 20 minutes. Add cream, puree soup and pass through a sieve
Heat the soup briefly, season to taste with salt, pepper and a little lemon juice. Fill soup into bowls, spread asparagus tips on top, garnish with pepper berries and parsley
Per total about 840 kJ, 200 kcal. E 6 g, F 14 g, KH 11 g