Mix yoghurt, sour cream, salt, pepper and lemon juice well.
Wash the fresh herbs and chop them very finely with a cradle knife or large kitchen knife. Stir in the herbs with the green liquid that may have formed or the frozen herbs.
Peel and quarter the eggs (you can also dice 2 of them) and stir them into the sauce. Leave to stand for about 1 hour. Boiled potatoes taste best with it.