A Thousand-Year-Old Tradition in a Bowl
Walk into any supermarket in Reykjavík and you will find a refrigerated section dedicated almost entirely to it. Order breakfast at a hotel in the capital and it will appear, thick and white, beside a jar of crowberries or a scattering of granola. Ask any Icelander about it and they will tell you, with quiet pride, that they have been eating it since before written Icelandic history began.
Skyr (pronounced roughly like skeer) is one of the oldest foods in Iceland — a thick, protein-rich dairy product with a creamy texture and a subtle, lactic tang that has been part of the Icelandic diet for over a thousand years. For most of that time it was known only to Icelanders. Then the rest of the world caught up.
Today you will find skyr in supermarkets across the United States, the United Kingdom, Germany, and beyond — sold by brands like Siggi’s, Skyr.is, and Arla under labels that emphasise the protein content and the clean, natural ingredients. But what exactly is it, where does it come from, and what makes it so distinctively Icelandic?
What Is Skyr, Exactly?
Skyr is often described as a yogurt, and in the practical language of modern supermarket labelling, that is close enough. But technically, it is a soft fresh cheese — or more precisely, a cultured dairy product made using a process similar to cheese-making rather than yogurt fermentation.
It is produced by heating skimmed milk, adding a bacterial culture and a small amount of rennet (a natural enzyme), and then straining the curds through cloth to remove the whey. This straining process is what gives skyr its characteristic density: it takes roughly four litres of milk to produce just one litre of skyr, which is why the finished product is so thick, so rich in protein, and so surprisingly low in fat.
A single 150-gram serving of plain skyr typically contains around 15–17 grams of protein, less than one gram of fat, and no added sugars — numbers that have made it a favourite among athletes, nutritionists, and anyone interested in high-protein, low-calorie eating. In Iceland, it has always just been breakfast.
Where Does Skyr Come From?
The origins of skyr stretch back to the Norse settlers who arrived in Iceland in the ninth and tenth centuries, bringing the tradition with them from Scandinavia. References to skyr appear in the medieval Icelandic sagas — it is mentioned in Egils saga and Njáls saga, among others — and it was clearly a staple of Viking-era food culture across the Nordic world.
Interestingly, while skyr survived and evolved in Iceland, the tradition largely died out in mainland Scandinavia over the centuries. Iceland’s geographic isolation, combined with the practical necessity of finding reliable, high-protein food sources in a volcanic, sub-Arctic island with limited agricultural land, meant that skyr never disappeared. It was preserved not just as a cultural tradition but as a genuine dietary necessity.
For centuries, skyr was made at home on Icelandic farms using a small amount of the previous batch as a starter culture — a practice not unlike sourdough baking, where the culture is passed down through generations. Today most commercial skyr is produced in dairy facilities using standardised bacterial cultures, but the underlying process remains remarkably close to what Icelanders were doing a thousand years ago.
How Do Icelanders Eat Skyr?
In Iceland, the most traditional way to eat skyr is simple: plain, perhaps with a splash of cold milk stirred in to loosen the texture, and topped with wild crowberries (bláber) or bilberries. In farmhouse tradition, it was often eaten with sugar and cream — a more indulgent preparation that softened the sharp, sour taste of unprocessed skyr.
Today, Icelanders eat skyr in much the same ways people elsewhere eat yogurt: as breakfast with granola and fresh berries, as a post-workout snack, blended into smoothies, or as a base for salad dressings and dips. The plain, unflavoured variety remains the most popular in Iceland. Flavoured varieties — vanilla, blueberry, strawberry — are largely for export markets.
Skyr is also used in Icelandic baking and desserts, appearing in cheesecake-style preparations and as a substitute for cream cheese or crème fraîche in savoury recipes. Its thick, neutral base makes it extremely versatile. If you enjoy the food traditions of the broader Nordic region — the slow pleasure of Swedish kanelbullar with coffee, or the craft of assembling a perfect Danish smørrebrød — skyr fits naturally into that same tradition of honest, unfussy, ingredient-led food.
Is Skyr a Yogurt or a Cheese?
This is a question the global food industry has had to wrestle with, because the answer determines how skyr gets regulated, labelled, and marketed in different countries.
In Iceland, skyr is technically classified as a fresh cheese. In the European Union and the United States, however, it is typically sold and labelled as a yogurt-style product, because that is the category consumers recognise and the regulatory framework that fits most neatly. Technically, the use of rennet in the production process is what distinguishes skyr from true yogurt — but in practice, the two products are close enough in texture, taste, and use that the distinction rarely matters to the person eating it.
What does matter is what it delivers: more protein per serving than Greek yogurt, less fat than most full-fat dairy products, a clean flavour that pairs well with both sweet and savoury ingredients, and a production heritage that predates almost every other packaged food on the supermarket shelf.
Why Did Skyr Go Global?
The internationalisation of skyr owes a great deal to one Icelandic-American entrepreneur. Siggi Hilmarsson moved to New York in the early 2000s and found himself missing the food of home. He began making skyr in his apartment kitchen, and in 2006 he launched Siggi’s — a brand that brought skyr to the US market with a clean-label, high-protein positioning at a time when Greek yogurt was already building the appetite for thicker, richer dairy products.
Timing played its part. The 2000s and early 2010s saw a surge of consumer interest in high-protein diets and natural, minimally processed foods. Skyr, with its ancient credentials and straightforward ingredient list, was exceptionally well suited to that moment. Major Nordic dairy brands — particularly Arla, which operates across much of Europe — followed with their own skyr lines, and the product moved from specialty import to mainstream grocery staple across much of the Western world in less than a decade.
Iceland’s cultural visibility helped too. The country’s dramatic landscapes, its reputation for clean living and outdoor adventure, and the growing tourism industry all made Icelandic food feel aspirational and trustworthy. If you’ve ever felt the pull of Iceland’s wild, sweeping scenery — the kind of place where the midnight sun burns through the night and the landscape feels prehistoric — then skyr is a small but genuine taste of what makes that country so distinctive.
How to Use Skyr at Home
If you are new to skyr, the easiest starting point is the same one Icelanders use: plain, with a handful of fresh or frozen berries and a drizzle of honey. The thick texture holds its own without needing to be dressed up.
Beyond the breakfast bowl, here are a few ways skyr earns its place in the kitchen:
- As a substitute for soured cream or crème fraîche — the tang and texture are similar, but with a fraction of the fat. Spoon it over soup, use it in a dip, or fold it into a sauce.
- In baking — skyr adds moisture and a subtle dairy flavour to cakes, muffins, and flatbreads without weighing them down.
- As a marinade base — the lactic acid in skyr tenderises meat in the same way that buttermilk does. It works particularly well with lamb, which has strong associations with Icelandic cooking.
- Blended into smoothies — a scoop of plain skyr turns a fruit smoothie into a genuinely filling meal, without the need for protein powder.
- As a salad dressing — thin with a little lemon juice and olive oil, add herbs, and it becomes a clean, protein-rich dressing that holds up well even on hearty grain salads.
What to Look for When Buying Skyr
In most supermarkets you will find skyr in the yogurt aisle, either in the plain dairy section or in a dedicated high-protein zone. Look for brands that list simple ingredients: skimmed milk, live cultures, and possibly a small amount of rennet. Flavoured varieties are fine for a snack, but for cooking and for the cleanest flavour, plain is almost always the better choice.
The consistency between brands varies more than you might expect. Icelandic brands like Skyr.is and Siggi’s tend to produce a denser, more intensely flavoured product. European commercial brands like Arla’s skyr line are typically a little lighter and more approachable for those coming to it for the first time.
A Food With Roots Worth Knowing
There is something quietly remarkable about the fact that a product made in virtually the same way on Icelandic farms a thousand years ago can now be found in fridges from Brooklyn to Berlin. Skyr has not succeeded because it was reinvented or cleverly repackaged — it succeeded because it was always genuinely good: nutritious, versatile, honest in its ingredients, and rooted in a culture that understood long before protein shakes were invented that good food should work hard.
The Nordic tradition has always produced food like this — gravlax that needs little more than salt, sugar, and time; breads and pastries that reward patience; dairy products that need no additives to be worth eating. Skyr belongs in that company. Whether you eat it the Icelandic way — plain, cold, with a few wild berries — or fold it into your own kitchen routine, it is one of the simplest, most satisfying discoveries Nordic food has to offer.
Photo by Anastasia Belousova on Pexels.
