Wash kale thoroughly, remove hard stalk attachments. If necessary cut the kale into smaller strips. Drain in a sieve. Peel and slice the onions. Dice the turkey breast slices. Wash 1 tomato, remove the stalk and dice roughly.
Heat 2 tablespoons of oil in a large pot. Sauté the turkey in it while turning, then remove from the pot and set aside. Add the onions and diced tomatoes to the cooking fat and fry. Add kale, sauté briefly, deglaze with stock and simmer covered over medium heat for about 45 minutes. In the meantime wash and peel the potatoes, if necessary wash them again and let them drain well. Heat the remaining oil in a large frying pan, fry the potatoes over medium heat, turning them several times for about 25 minutes. 5 minutes before the end of the frying time, sprinkle the potatoes with sugar. In the meantime cut the turkey viennese into slices. Wash the rest of the tomato, cut into quarters, remove seeds and dice finely. Add turkey breast and turkey vienna to the stew 2-3 minutes before the end of the cooking time. Season stew with salt and pepper. Serve stew and potatoes in plates.
Heat the remaining oil in a large frying pan, fry the potatoes over medium heat, turning them several times for about 25 minutes. 5 minutes before the end of the frying time, sprinkle the potatoes with sugar. In the meantime cut the turkey viennese into slices. Wash the rest of the tomato, cut into quarters, remove seeds and dice finely. Add turkey breast and turkey vienna to the stew 2-3 minutes before the end of the cooking time. Season stew with salt and pepper. Serve stew and potatoes in plates. Sprinkle with tomato cubes. Add mayo mustard cream to taste