Remove lettuce leaves from the stalk, wash and drain and, except for 2 leaves for garnishing, pluck into bite-sized pieces. Wash and clean the rocket. Wash and clean the cucumber, cut it in half lengthwise and cut into slices.
Wash, clean and slice the tomato. Mix the ingredients, except for 1 slice of tomato. Season yoghurt with sugar, salt and pepper. Wash parsley, dab dry, chop and stir into the yoghurt.
Wash the meat, dab dry and season with salt and pepper. Cover 4 escalopes with 1 slice of cheese and ham each. Cover with a 2nd schnitzel. Whisk the egg in a deep dish. Turn the schnitzel first in flour, then in egg and finally in breadcrumbs.
Heat clarified butter in a large frying pan. Fry the cordon bleu over medium heat for 8-10 minutes, turning. Arrange the salad in a bowl and add some dressing. Add the rest. Arrange cordon bleu on a plate and garnish with lettuce, tomato and lemon wedge.
French fries, ketchup and mayonnaise taste good with it.