Hard boil eggs. Quench and peel. Then let them cool down
Stir the salad cream and yoghurt until smooth. Season to taste with salt and pepper. Halve the cream. Wash the herbs and chop coarsely, except for some chervil for garnishing. Stir under one half of the cream
Finely dice the ham. Stir the diced ham, except for 1 tablespoon, into the other half of the cream
Cut the eggs into slices with the egg slicer. Layer alternately with herb and ham cream in a bowl. Garnish with diced ham and chervil