Potato salad with sprat or sauerkraut

Boil the potatoes in their skins. Peel while still warm, and slice into 5 mm thick pieces.

Clean the sprat from the bones and cut 250 grams into pieces 5-6 mm thick.

Peel the onion and slice it very thinly with a sharp knife.

For the marinade, blend all remaining ingredients in a blender for 2 minutes.

Dress the salad and gently mix it with the potatoes until a sauce forms from the marinade and potato juice. The potatoes will slightly lose their shape, but this will give the salad a unified and extremely intense flavor.