* Melt butter in a large saucepan, stir in flour to make a roux.
* Pour in asparagus water, stirring at the same time with a whisk until the lump of flour is dissolved.
* Bring the soup to a boil and season with the remaining ingredients and spices.
* Turn off the heat.
* Beat the egg, stir with the whipped cream and add to the soup when it is no longer boiling.
* Depending on your mood, sprinkle with herbs (e.g. dill) or add fine strips of salmon ham or smoked salmon. Do not make more.
Our tip: As an alternative to fresh herbs, you can also use frozen – these are also characterized by a fresh taste!