Wash the potatoes thoroughly and cook in boiling water for about 20 minutes. Cut meatloaf into cubes. Cook the beans in boiling salted water for about 7 minutes, remove and drain well. Wash oregano, shake dry and chop coarsely except for a little bit for garnishing. Clean and wash the tomatoes
Drain the potatoes, allow to evaporate and cut in half lengthwise. Heat the oil in a large pan. Fry the potatoes for 8-10 minutes until they are brown all around. Approx. 5 minutes before the end of the cooking time, add meat loaf and fry.
Add beans and tomatoes and fry for approx. 3 minutes. Stir in crème fraîche and mustard and add stock. Season with salt and pepper. Sprinkle with chopped oregano, bring to the boil again briefly and garnish with oregano