Wash potatoes, cook in boiling water for about 20 minutes, drain potatoes, quench, peel and slice. Clean the savoy cabbage, cut in half and cut out the stalk. Wash cabbage and cut into strips. Blanch the cabbage in portions in boiling salted water for 3-4 minutes, remove with a skimmer. Quench in cold water and let it drain
Bring the stock to the boil, add vinegar and mustard. Season with salt and pepper, pour over the potatoes and leave to stand for approx. 20 minutes
Clean, clean and halve the mushrooms, heat the oil in a pan. Sauté the mushrooms in it, season with salt and pepper. Fold the savoy cabbage and mushrooms into the potatoes and let them simmer again for about 10 minutes
Wash and clean the radishes and cut them into thin slices. Wash parsley, shake dry and chop finely. Fold the radishes and parsley into the salad, season again with salt and pepper.
Waiting time approx. 30 minutes