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What you need to know before trying Sweden’s fermented herring

Before you turn your nose up at Sweden's pungent-smelling fermented surströmming, read this.

What you need to know before trying Sweden's fermented herring
Baby diaper or delicacy? You tell us. Photo: Hasse Holmberg/TT

What is surströmming?

Surströmming is Swedish for “sour herring” and is fermented herring.

They are plucked out of the Baltic Sea before they are stored for months to stew in their own bacteria through a carefully calibrated autolysis method which creates rather smelly acids, using just enough salt to prevent it from rotting.

Don’t look scared, this is an old food preservation method and has been around for thousands of years around the world. 

When do you eat it?

The traditional “surströmming premiere” is held on the third Thursday in August, so August 17th in 2023.

That’s when Swedes crack open their cans of surströmming – if the can has a slight bulge, don’t worry, it’s because the fermentation process continues even after the herring is canned.

How do you eat it?

Not like BuzzFeed’s American staff, who published a video of themselves trying it for the first time, using words like “dead body” and “baby diaper” to describe the smell. They incensed one Swedish surströmming expert so much that he published his own instruction video to how to really enjoy this unusual delicacy.

Eat it with onion, sour cream, bread, potatoes and a glass of snaps.

But before you eat it, remember to store it correctly. Ruben Madsen of the Surströmming Academy on the island of Ulvön says “it must always be stored in a cool environment. If it is stored in a warm place, then the lactic acid destroys the proteins and there is no fish left inside the can”.

Baby diaper?!

It does have a strong smell, there’s no denying that.

If you don’t like it, there are various tactics to make it a little bit easier to stand. One is to open the can under water. Another is to eat it outdoors. Alternatively, as soon as you open the can, stick your nose as close as possible and take a deep breath to immunise yourself – nothing will smell bad after that.

Don’t worry, it tastes better than it smells, after your nostrils get over that initial shock.

And all Swedes eat this?

Admittedly, it is not to everyone’s liking. Traditionally, it is also more common in northern Sweden, and especially on the north-eastern coastline around the High Coast and further north in the Norrland region.

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Swedish personality test: What does your cinnamon bun say about you?

October 4th is Cinnamon Bun Day in Sweden, but what does your choice of cinnamon bun say about you?

Swedish personality test: What does your cinnamon bun say about you?

The rolled bun

You’re a traditionalist who likes to savour the good things in life and believes that the old classics can’t be beaten by new trends.

You would never queue at a hipster bakery for an overpriced kanelbulle, and you probably got your rolled bun, see the above picture, from the local bakery which has been making them the same way for decades.

You’re most likely going to eat it at 3pm with a strong cup of coffee and no, you won’t be taking a picture of it for Instagram.

The knotted bun

Knotted cinnamon buns. Photo: Henrik Montgomery/TT

You’re always following the latest trends and spent weeks researching the best kanelbulle in your area in preparation for Cinnamon Bun Day.

Appearance is key, and you want your bun to not just taste good, but look good too. You ate it for breakfast rather than a mid-afternoon fika, as you were up at 4am to get in line at the hippest bakery in town to secure your haul.

The iced bun

A less traditional iced bun. Photo: Yosep Sugiarto on Unsplash

Either you’re a bit of an anarchist, or you’re stubborn.

Maybe you grew up eating iced cinnamon buns and you’re not going to let something as minor as moving to Sweden change your habits, even if you had to actively find somewhere selling cinnamon buns the way you like them.

You know these aren’t traditional, and that Swedes will have strong opinions if they see you eating them, but you don’t care. Having said that, you’re still integrated enough to celebrate cinnamon bun day in the first place.

The cardamom bun

Cardamom seeds in a pestle and mortar. Cardamom buns look pretty much exactly like cinnamon buns, anyway. Photo: Henrik Montgomery/TT

You consider yourself to be a bit edgy and different, and had to specifically ask for a cardamom bun on cinnamon bun day to stand out from the crowd.

A few people raised their eyebrows at you when you said “oh actually, I don’t really like cinnamon buns”, but you’re just enjoying the opportunity to show off your mature, more developed tastes, and the fact that you’re not like everyone else. 

The homemade bun

Who cares if they don’t look as good, they sure taste good. Photo: Fredrik Sandberg/Scanpix/TT

You don’t do things by halves – you would never dream of buying a cinnamon bun from a bakery when you can make them at home, and carrying on family traditions is important to you. Your cinnamon bun recipe was probably handwritten on a piece of paper by your grandmother decades ago, and you make it religiously each year to honour her memory (even if you secretly think it’s a bit too sweet).

You consider yourself to be thrifty, and although your homemade buns may not be cheap you still convince yourself you’re saving money as your batch of 12 homemade buns is still cheaper than buying a dozen from the nearest bakery. 

The healthy bun

They taste just like normal cinnamon buns, I swear… Photo: Fredrik Sandberg/TT

You’re disciplined, and you’re not going to let something as trivial as cinnamon bun day mess up your strict diet, so to stop yourself from feeling like you’re missing out, you make a batch of “kanelbullar” from blended dates and cashew nuts.

You also have strong willpower and convince yourself that the beige cinnamon-flavoured mush – which, to be fair, actually is quite tasty – is just as good as a cinnamon bun, and can’t understand why none of your colleagues are convinced when you try handing them out at work.

The ‘this will do’ bun

They’re buns, they’re cinnamon flavoured, they’re good enough. Photo: Udo Schröter/Creative Commons

You’re busy and you’ve got more important things to be doing than whipping up a batch of cinnamon buns or taking the time out of your busy schedule to queue up at a bakery.

You barely remembered it was cinnamon bun day at all as your mind was on other things, but a sign at the local petrol station reminded you when you were filling up your car. You grab a bag of gifflar from the rack and figure that they’re better than nothing.

The alternative bun

You start off your day with cinnamon bun porridge. Photo: Food Photographer | Jennifer Pallian on Unsplash

You’re committed and creative – you’re going to make the most of cinnamon bun day by consuming cinnamon in as many ways as you can think of.

You start off the day with cinnamon bun porridge, before making up a cinnamon bun protein shake and heading to the gym. You swing by your local coffee shop for a cinnamon bun latte before work, where you eat your first actual cinnamon bun of the day.

By lunchtime, you’re already sick of cinnamon, but you remind yourself that cinnamon bun day is only once a year and plough through at least four more cinnamon-flavoured dishes before relaxing with a nice cinnamon-scented candle in the evening before bed.

The freebie bun

The best tasting cinnamon bun is the one someone else paid for. Photo: Allis Nettréus/SvD/TT

You’re an opportunist, and you know how to find a good deal. You knew you didn’t actually have to buy your own cinnamon buns today, as you could count on other people (probably your colleagues or your boss) to buy a load for the office.

As you eat your bun – it doesn’t matter what style it is, you’ll take anything you can get – you realise it tastes even better when you know you didn’t pay for it yourself.

The ‘just one more’ bun

It’s only cinnamon bun day once a year… Photo: Susanne Walström/

You are a hedonist who believes the most important thing in life is to enjoy yourself, so you have accepted the fact that this is a day where you can indulge to your heart’s desire.

You’ve already eaten two cinnamon buns before arriving at work before you realise your colleagues have also supplied buns for the office. Well go on then, just one more…

The reluctant bun

Would anyone like my cinnamon bun leftovers? Photo: Magnus Carlsson/

You’re a worrier, but you want to fit in, so you reluctantly say yes to the offer of a cinnamon bun despite not actually wanting to eat one at all as you think it’s too unhealthy. Maybe you try and find someone to share with, or you actively look for the smallest one on the plate.

You tell yourself you’ll muster up the courage to say no next year, but secretly know you’re just going to do the same thing all over again (and you’re actually fine with it, as the cinnamon bun you ate was pretty good, to be honest).

The non-observer 

You can still enjoy a cup of coffee without eating a cinnamon bun. Photo: Jessica Gow/Scanpix/TT

You’re confident and you don’t care too much about what people think.

You’re not planning on celebrating cinnamon bun day this year for whatever reason – be it health, allergies, or even that you don’t particularly like cinnamon buns – and you’re fine with people’s confused questions.

You know what’s best for you, and you’re sticking to it, even if that does mean you won’t be eating any sticky buns this year.