Wash the potatoes and boil them in the jacket in salted water (depending on the size of the potatoes, cook for 25-35 minutes). Drain the water and let the potatoes dry. Peel the garlic, cut it in half, and rub a salad bowl with these halves.

Peel the potatoes (still warm) and cut them into the salad bowl. Add vinegar and mustard, plenty of oil, salt and pepper, and a large pinch of sugar. Mix carefully.

Wash the green onions, peel the heads, and cut them into small pieces along with the greens. Mix onions into potatoes. Let sit for a while.