Cook the potatoes in plenty of boiling water for 15-20 minutes. Clean, wash and drain the lamb's lettuce. Wash herbs, dab dry. Pluck parsley leaves and dill flags from the stalks, chop finely.
Cut the chives into small rolls. Season vinegar with salt, pepper and sugar, gradually add 6 tablespoons of oil. Fold in herbs. Drain potatoes, rinse with cold water and peel. Dice mozzarella finely.
Mix peas and mozzarella. Season with salt and pepper. Beat the cutlets between 2 layers of foil flat. Cover each schnitzel with a slice of ham. Place a teaspoon of mozzarella mixture on each cutlet end and roll up.
Fix it with small wooden sticks. Whisk the egg and season with salt and pepper. Turn each cutlet first in flour, then in whisked egg and finally in breadcrumbs. 2 tablespoons of oil in a pan
Fry the roulades for 10 minutes until golden brown. Cut the potatoes into slices. Mix the potatoes, lamb's lettuce and vinaigrette and serve with the schnitzel roulades.