Soak the sauerkraut in a bowl of warm water. Cover the potatoes with water in a small saucepan and simmer over medium heat until tender, about 10 minutes. Drain and keep warm.
Meanwhile, heat the vegetable oil in a large pot over medium-high heat. Prick the sausages with a fork and add to the pot along with the pork; cook until browned on one side, about 4 minutes. Turn the meats and add the onion, garlic, coriander, juniper berries, and salt and pepper to taste. Cook until the onion is golden brown, about 6 minutes. Add the apple and cook 2 more minutes.
Drain the sauerkraut, then add to the pot along with the wine and 1 cup water. Cover and simmer 10 minutes, then uncover and cook until thickened, about 5 more minutes. Transfer the sauerkraut, meats and potatoes to a platter. Top with the parsley and serve with mustard.
Per serving: Calories 417; Fat 14 g (Saturated 3 g); Cholesterol 90 mg; Sodium 1,382 mg; Carbohydrate 33 g; Fiber 7 g; Protein 29 g