Peel the potatoes and cook them al dente in boiling salted water. Drain, evaporate and let cool. Then cut into slices. Wash the spring onions and cut into rings. Cut the sheep cheese and the sun-dried tomatoes into cubes. Either leave the olives as they are or divide them once in the middle.
Put the potatoes, spring onions, sheep cheese, sun-dried tomatoes, olives and all the herbs, except for the dill, in a bowl and mix well.
For the dressing, mix the olive oil with the lemon juice. Add yogurt, dill, mustard and sugar and mix everything into a cream. Season the salad cream with salt and pepper and pour over the potato salad. Mix everything thoroughly until all ingredients are coated with the salad dressing.