Peel and finely dice the shallot. Peel pumpkin, remove seeds. Grate pumpkin coarsely. Peel, wash and coarsely grate the potatoes. Squeeze pumpkin and potato grater well and mix with half of the shallot, starch and egg yolk. Season with salt, pepper and nutmeg
Heat 1 tablespoon of oil in a large, coated frying pan. Form the potato-pumpkin mixture into approx. 6 Rösti (6-7 cm Ø), fry for approx. 6 minutes while turning
Clean the salad, wash it and let it drain in a sieve. Season vinegar with salt, pepper and sugar. Add 1/2 tablespoon of oil drop by drop. Stir in the remaining shallots cubes. Mix salad with vinaigrette and arrange with the rösti. Add the quark