Peel and finely chop the onion. Knead minced meat, onion and 1 egg. Season with salt, pepper and paprika. Form small balls out of the minced mass. Wash and clean the tomatoes and cut them into small cubes.
Clean the rocket, wash it and pluck a little smaller. Separate 2 eggs. Mix egg yolk, milk, flour and 1 pinch of salt. Beat the egg white until stiff and fold into the egg mixture. Wash the herbs and dab dry. Heat 1 tablespoon of oil in a pan (20 cm Ø).
Place a rosemary and sage stalk in the pan. Add half of the egg mixture and let it set at low heat for about 8 minutes. Remove the omelette, fold it over halfway and keep it warm.
Heat 1 tablespoon of oil and bake the 2nd omelette in the same way. Heat 1 tablespoon of oil in a frying pan. Fry the meatballs for 5 minutes. Mix yoghurt and sour cream, season with salt, pepper and sugar.
Fill omelettes with meatballs, tomatoes and rocket. Pour sauce over them. Garnish with herbs and serve.