Peel, wash and grate the potatoes. Drain the sauerkraut and add. Peel, grate and add onion. Stir in egg, season with salt and pepper. Line a baking tray with baking paper and brush thinly with oil.
Spread 12 piles of dough from the baking paper, press them slightly flat. Cook in the preheated oven (electric cooker: 200 °C/ convection oven: 175 °C/ gas: level 3) for approx. 30 minutes, turning after half the baking time.
In the meantime, stir the curd and milk until smooth, season with salt and pepper. Wash the chives, shake dry and cut into fine rolls, except for a little bit for garnishing. Fold the rolls into the quark except for a little bit.
Arrange in a small bowl, sprinkle with chives and garnish. Cut salmon into strips. Arrange potato pancakes with salmon and quark on a plate.