Hákarl: Iceland’s Fermented Shark Guide (Viking Survival Food)

The air is cold and crisp. On a wooden board sits a cube of white, jelly-like meat. Then the smell hits you — a very strong smell of ammonia. This is hákarl, Iceland’s traditional fermented shark. It is one of the world’s most challenging extreme foods. For Icelanders, however, it’s a living link to their Viking heritage. It also proves how people survived in one of the planet’s harshest environments.

Hákarl — Iceland’s fermented shark, a Viking-era survival food and cultural heritage.

The story of hákarl begins not as a gourmet choice. Instead, it started as Viking-era survival. The Greenland shark is freshly toxic. If you eat it fresh, it causes severe stomach problems. Why? The shark contains urea and TMAO.

Therefore, Icelanders developed a fermentation process. This process neutralizes the toxins. What was once a preservation technique has become a national symbol of resilience.

For those who enjoy extreme foods, you might also want to try fried tarantula in Cambodia or balut in the Philippines.

💡 Key Insight: The ammonia smell is sharp and strong. But the traditional way to eat hákarl is to chase it with Brennivín (“Black Death”). This local spirit cuts through the strong flavor.

How Icelanders Make Hákarl

The transformation takes months. First, fishermen catch the shark. Then they behead it and cut it into pieces. Next, they place these pieces in a shallow, gravel-lined pit. They cover the meat with sand and heavy stones. The meat stays there for 6 to 12 weeks. This allows anaerobic fermentation to happen. This crucial step breaks down the toxins.

After burial, workers dig up the shark. They cut it into strips. Then they hang the strips in drying sheds for several more weeks. Finally, they cut away the dark crust. Inside, they find the whitish, jelly-like meat. Finally, they cube it into bite-sized pieces.

Hákarl served with Brennivín — the traditional way to eat Iceland’s infamous fermented shark.

What Hákarl Tastes Like

The texture is chewy and jelly-like. It feels similar to firm, rubbery cheese. The first taste is surprisingly mild and cheese-like. However, this is quickly followed by an intense ammonia aftertaste. This aftertaste can burn your throat.

Where to Try Hákarl

The Kolaportið Flea Market (Reykjavik): Vendors here offer free samples. This is a great place for beginners.

Bjarnarhöfn Shark Museum (Snæfellsnes Peninsula): You can see traditional drying sheds here. The museum also offers tastings.

Best time to try it: During Þorrablót (late January to late February). This is a midwinter feast where hákarl takes center stage. People serve it alongside other traditional foods like surströmming from Sweden.