Cook the egg for about 10 minutes. Quench, peel and let it cool down
Wash the herbs and shake dry. Pluck parsley and dill from the stalks. Coarsely chop all herbs
Bring a good 3/4 l water to the boil. Stir in stock. Bring the herbs to the boil briefly and puree finely. Knead butter and flour. Stir into the soup in flakes. Bring to the boil. Refine with crème fraîche. Season to taste with salt and pepper.
Chop the egg. Cut fish into pieces. Serve the soup. Add trout and chopped egg and garnish with the remaining herbs