Wash the nettle with cold water. Pick out delicate leaves and tips. Cut them up finely with scissors.
In a pot of water, add the cut nettle and boil 10-15 min., then pour into a strainer and wash under running water.
Boil about 30 min., then you can blend with an immersion blender if you like. Add the eggs 1 by 1, wait for them to boil a bit and stir to make them stringy.
Beat the flour in a bowl with a little water and pour this into the boiling nettle to thicken it.