Wash and peel the asparagus and cut off the woody ends. Cut the asparagus into pieces and set aside. Boil the asparagus skins in 1 litre of salted water and white wine. Add bay leaf, peppercorns, thyme and sugar.
Cook for about 30 minutes. In the meantime, peel and wash the carrots and, if necessary, cut them into strips with a serrated knife. Cut the cubes into slices. Peel onion, grate finely, knead with minced meat and egg yolk and form into small dumplings.
Pour the asparagus stock through a sieve and collect. Bring to the boil again and cook the asparagus for about 18 minutes. After approx. 8 minutes add carrots and peas, after 10 minutes add dumplings and let them simmer at low heat.
Season soup with lemon juice, salt and pepper. Wash the chervil, dab dry and chop finely. Arrange the soup in bowls and serve sprinkled with chervil.