Psychonaut seven
Sep 13, 2007

Anyone here ever tried this?

fermented Baltic herring and is a staple of traditional northern Swedish cuisine. The Baltic herring, known as strömming in Swedish, is smaller than the Atlantic herring, found in the North Sea, and traditionally the definition of strömming (Baltic herring) is herring fished in the brackish waters of the Baltic north of the Kalmar Strait[1] The herring used for surströmming are caught just prior to spawning. The fermentation starts from a lactic acid enzyme in the spine of the fish, and so the fermentation is by autolysis; together with bacteria, pungent smelling acids are formed in the fish such as propionic acid, butyric acid and acetic acid. Hydrogen sulphide is also produced.

The salt raises the osmotic pressure of the brine above the zone where bacteria responsible for rotting (decomposition of proteins) can thrive and prevents decomposition of fish proteins into oligopeptides and amino acids. Instead the osmotic conditions enable the Haloanaerobium bacteria to prosper and decompose the fish glycogen into organic acids, making it sour (acidic). Fermented fish is an old staple in European cuisines; for example the ancient Greeks and Romans made a famous sauce from fermented fish called garum[2] and Worcestershire Sauce also has a fermented fish ingredient.


Honorary Master
Oct 26, 2006
Never eaten it, but some Danish family wanted to try it so I bought a can for 'em last year.

It smells disgusting but the horror of it is totally overrated.

Bokkoms smells infinitely worse.
Feb 6, 2018
people eating fish complaining about the smell of fish
I for one love the smell of raw fish and bokkoms. I love peeling the bokkom and eating it with something sweet like jam on toast or coffee with extra sugar.


Lucky Shot
May 13, 2010
Surströmming with potatoes and onion on buttered tunnbröd.
Because of the strong smell, surströmming is ordinarily eaten outdoors. The pressurized can is usually opened some distance away from the dining table, and is often initially punctured while immersed in a bucket of water, which prevents brine from spraying onto clothes and traps most of the smell.

Surströmming comes both ungutted with just the heads removed and as fillets. The fish is gutted prior to eating, and the backbone and sometimes the skin are removed. Roe from surströmming is commonly eaten along with the fish.


Well-Known Member
Mar 19, 2014
Place some bokkoms in steel wheel rims of your buddys car behind the hub caps. The pong will drive him nuts and he will never find it.