Wash the dill, shake dry and chop finely. Salmon wash, dab dry. Chop finely in the universal chopper and place in a bowl. Mix egg white, horseradish, breadcrumbs, capers, mustard and dill with the salmon, season with salt and pepper.
Form 4 meatballs and chill for about 10 minutes.
Peel and wash the potatoes and cook them in plenty of boiling salted water for about 20 minutes. Peel and finely dice the onion. Mix vinegar, 4 tablespoons cold water and sugar, add olive oil and season with salt and pepper.
Wash the cucumber and cut it into slices lengthwise up to the core. Add the cucumber slices to the vinaigrette and let it steep.
Heat the oil in a coated pan. Fry the meatballs over medium heat for 7-8 minutes while turning. Wash parsley, shake dry and chop finely. Drain the potatoes, heat the fat in a coated pan, stir-fry the potatoes in portions and sprinkle with parsley.
Arrange salmon burgers, cucumber salad and potatoes on plates. Sprinkle with coarse pepper.