Cook potatoes with skin in boiling water for about 20 minutes. Drain, rinse with cold water and peel. Let cool off.
Peel and chop 1 onion. Fry in 1 tbsp. hot butter. Roughly dice beetroot and gherkins. Coarsely chop the corned beef. Finely chop or puree the steamed onion, beetroot, gherkins, corned beef and gherkin stock in the universal chopper.
Season with salt and pepper.
Coarsely grate boiled potatoes. Knead with 1 egg and flour. Season with salt and pepper. Form 4 Rösti from the mixture. Mix the corned beef mixture with 1 bag of puree flakes. Form approx. 4 meatballs.
Turn in 4 tablespoons of puree flakes.
Cut 2 onions into thick rings. Peel apple, remove core with an apple corer. Cut apple into thick slices. Heat 1 tablespoon butter in a frying pan. Fry the apple briefly on each side and remove.
Sauté onions in frying fat, sprinkle with 2 teaspoons of sugar and caramelise lightly. Remove and keep both warm.
Heat 3 tablespoons of oil in a frying pan and fry the Rösti in it until golden brown on each side. Remove and keep warm as well. Fry the meatballs in the frying fat for about 2 minutes on each side. Heat 1 tbsp. oil in another pan.
Fry 4 eggs in it to fried eggs, season with salt and pepper.
Wash the chives, shake dry, cut into fine rolls. Arrange the Rösti on plates. Place the meatballs on top. Stack the apple, fried eggs and onion rings on top. Sprinkle with chives.