Peel, wash and finely grate the potatoes. Mix with the egg, flour, salt and pepper. Peel the onion, cut in half, cut across into thin strips and mix in.
Heat 2-3 tablespoons of oil in a pan, add 1 heaped tablespoon of batter to each buffer and smooth out into a thin, round flatbread. Fry each side for 4-5 minutes until crispy brown. Serve each of the buffers garnished with 2 slices of salmon, 1 dollop of sour cream and dill tips.