2 or 3 fillets of marinated herring with onion (typical scandinavian)3 marinated cucumber, polish (sweet) style1 Golden (yellow and somewhat sweet, not acid) apple3 boiled potatos, diced1 1/2 cups mayonnaiseOptional: a little mustardSlice finely the cucumber, cut the apple in dices and the fillets in small pieces. Mix the mustard, mayonnaise, a little vinegar from the herring and then add the