Skyr substitutes

Strained cultured milk with the whey drained off, sold everywhere, and the nearest thing to skyr on any supermarket shelf.

Best for

breakfast bowls, baking, dips and sauces, smoothies, topping desserts, marinades

Genuinely interchangeable, which is why most recipes list them together. The difference you will notice is sourness: Greek yogurt is tangier and more acidic, with a sharper finish, while skyr tastes milder and milkier with a faint cooked-milk sweetness. Full-fat Greek yogurt is also much richer than skyr, so in something like a low-fat protein bowl the swap changes the calorie profile a lot even though the texture is right. If you want to soften the tang, stir in a teaspoon of honey or a splash of cream.

The German and Central European fresh cheese made the same way skyr is, by culturing milk and draining the whey.

Best for

baking, cheesecakes, savoury dips, high-protein breakfasts, spreading on rye bread

Arguably the closest relative to skyr of anything you can buy, since both are strained fresh cheeses rather than true yogurts, and both land around 10 to 12 grams of protein per hundred grams. Quark is slightly chalkier and more crumbly straight from the tub, and less tangy again than skyr, so a quick whisk with a spoon of milk gets the glossy spoonable texture back. In baking it behaves identically.

Ordinary full-fat or low-fat plain yogurt drained in a cloth-lined sieve for two to four hours in the fridge.

Best for

when only regular yogurt is available, dips and tzatziki, baking, dollop on soups and stews

The best flavour-and-texture match you can make from scratch, and the whey you drain off is useful in bread or smoothies rather than being waste. Straining concentrates the acidity as well as the solids, so the result is tangier than skyr. Two hours gives a Greek-yogurt thickness, four hours gives something you can almost slice. Do not skip the straining and use yogurt straight, in a sauce or dip it will be visibly loose.

Full-fat or low-fat cottage cheese run through a blender or food processor for a minute until no curds remain.

Best for

high-protein bowls, savoury dips, pancake batters, baked cheesecakes

Matches skyr on protein better than almost anything, and once blended the texture is remarkably close. The catch is salt: cottage cheese is seasoned and skyr is not, so a sweet application tastes distinctly savoury unless you use an unsalted brand, and any savoury dish needs its own salt cut back. It is also much less acidic, which matters in baking, so add a teaspoon of lemon juice per cup if the recipe relies on skyr to react with baking soda.

Middle Eastern strained yogurt cheese, drained much further than Greek yogurt and usually lightly salted.

Best for

savoury uses, dips and mezze, spreading, dolloping on roasted vegetables

Thicker than skyr, sometimes thick enough to roll into balls, and salted, so it belongs in savoury cooking and not in a fruit-and-granola bowl. The tang is pronounced and the texture is denser and more spreadable than spoonable. Loosen it with a little milk or water if the recipe wanted something pourable.

Cultured cream, for the times when skyr was in the recipe as a creamy body rather than as a protein source.

Best for

sauces, baking, dolloping on soup, cake batters

This is the swap that changes the dish most, and it is worth being clear about why: skyr is roughly 0 to 2 percent fat and 11 percent protein, and sour cream is the reverse, around 20 percent fat and 3 percent protein. The result is much richer, silkier and heavier, and any nutrition claim in the recipe is gone. In a cake or a sauce it is delicious and often better. In a breakfast bowl or a protein-focused recipe it defeats the purpose.