The Nordics and the Baltic · Volume 24, The Swedish Crown, the Gulf of Bothnia and the Reindeer North
Surströmmingsklämma
Sweden's High Coast

An illustration of the dish, not a photograph of it cooked.
- Time
- 10 minutes
- Researched
- 13 sources cited
- Reviewed
- Not yet reviewed from inside the tradition
- Cooked
- Not yet cooked and reported
Surströmming is fermented, not pickled: Baltic herring salted lightly enough that its own enzymes and bacteria continue working inside the sealed tin for months, producing propionic, butyric and acetic acid and a genuinely strong smell that is a feature of the process, not a failure of it. Open the tin outdoors, submerged in a bucket of water, both to contain the spray of pressurised liquid and to dampen the smell. The single confirmed transport restriction is an airline ban, since every major carrier treats the still-fermenting, still-pressurised tin as dangerous cargo; no UK postal or courier ban specific to the product was found, and a specialist retailer currently couriers it within Britain.
As tradition built it
Serves 4. About 10 minutes to assemble, once the tin is opened.
Ingredients
- 4 tunnbröd (soft Swedish flatbread)
- 4 to 6 boiled almond potatoes, mashed roughly
- 1 red onion, finely chopped
- 8 to 12 surströmming fillets, bones removed
- 4 tbsp gräddfil (soured cream) or crème fraîche
- a small handful, chopped chopped chives, to finish
Method
- Lay each tunnbröd flat and spread with a generous layer of mashed potato.
- Scatter over the chopped red onion.
- Lay two or three surströmming fillets along the centre of each.
- Spoon over the gräddfil, and finish with chopped chives.
- Fold the flatbread in half or roll it, and eat immediately, standing up, the way it is eaten at a Swedish surströmmingsskiva.
What a modern chef changes
A less extreme, fully controllable Nordic-fermented fish for a cook who cannot get, or does not yet want, the real tin.
Rung 3, applied by analogy
Method
- Build the Nordic Food Lab's own "koji-chovy" as a gateway to the same flavour family: fill a small, fresh herring with cooked barley koji and salt it lightly, holding it refrigerated for a matter of days rather than months, for a genuinely fermented, umami-heavy result far milder and far more controllable than true surströmming.
- Treat the real tin, when you do open it, with the same seriousness this chapter's arsenal gives every ferment in it: taste it plainly, on its own terms, rather than presenting it as a dare, since a fish this deliberately and skilfully fermented deserves to be understood rather than performed.
- Use genuinely good almond potatoes, waxy and specifically named, rather than a generic boiling potato, since the potato's own mild sweetness is doing real work here against the herring's intensity.