Mix cream cheese and sour cream. Wash and drain the salad. Clean, wash and pat dry the peppers. Cut into cubes. Season vinegar with salt, pepper and sugar, fold in oil. Peel, wash and grate potatoes.
Mix with cheese and egg and season with salt, pepper and nutmeg. Heat oil in a pan. Fry the Rösti on both sides for about 4 minutes over medium heat until golden brown. In the meantime mix salad with diced peppers and drizzle with vinaigrette. Arrange the Rösti with herb cream cheese sour cream and salad and garnish with grated cheese and chopped parsley.