Peel and wash the potatoes and cut them roughly into pieces. Cover the potatoes and cook them for about 20 minutes in little boiling salted water
In the meantime heat 2 tablespoons of oil in a pan and roast the seeds for about 4 minutes while turning. Wash the meat, dab dry and cut into thin slices. Remove the seeds from the pan and fry the meat in portions for about 4 minutes each. Season with salt and pepper. Wash and clean the green beans and cut them in half lengthwise. Clean, wash and halve Pak-Choy. Peel and finely chop the onion
Remove meat from the pan, keep warm and briefly sauté diced onions in the frying fat. Pour black beans into a sieve and rinse with water. Add 100 ml water to the pan, bring to the boil and dissolve the frying fat. Add the beans, ketchup and 4 tbsp soy sauce. Bring to the boil and simmer for about 5 minutes
Meanwhile cook the green beans in boiling salted water for 6-8 minutes. Warm up the milk. Drain potatoes. Add butter, warm milk and some nutmeg and mash. Season mashed potatoes with salt
Heat 2 tablespoons of oil in a frying pan and sauté the pak choy for about 3 minutes, turning. Season with 4 tbsp. soy sauce and pepper. Add the beans. Arrange vegetables, meat and bean sauce