Mix the sour cream, low-fat quark and dill. Season to taste with salt, pepper, lemon juice, honey and mustard.
Peel and wash the potatoes and onions. Roughly chop both in a blender and place in a bowl. Add the egg, cornstarch, salt, pepper and nutmeg to the mixture and mix the ingredients well. Fry the buffer in portions in hot oil in a pan on both sides until golden.
Either serve the smoked salmon separately or add them to the potato pancakes. Serve with the dip.