Wash the potatoes and cook for about 20 minutes. Quench, peel and let cool down.
Cut the potatoes directly into slices in a large bowl. Dissolve the stock in 200 ml of boiling water. Stir in vinegar, salt, pepper and some sugar. Pour hot over the potatoes and leave to stand for about 1 hour.
Clean and wash the radishes, spring onions and chives. Quarter the radishes. Cut spring onions into rings and chives into small rolls. Dice the cheese or grate it roughly. Mix oil and prepared ingredients into the potatoes.
Season salad again and let it stand covered for at least 1 hour.