Wash the potatoes and cook for about 25 minutes. Then quench, peel and cool.
Wash the herbs, pluck and chop the needles or leaves. Onions peel and chop finely. Fry onions and herbs in hot oil. Add 350 ml water, bring to the boil. Stir in broth and vinegar.
Take it off the stove. Season with salt and pepper. Quarter potatoes and mix with hot broth. Cool down.
Wash and halve the tomatoes. Drain the cucumbers. Cut cucumbers and sausages into slices. Wash parsley and chop leaves finely. Mix all prepared ingredients. Fold in crème fraiche.