Is skyr the same as quark?

Not identical, but very close. Both are strained fresh cheeses with similar protein and fat. Skyr comes from the Icelandic tradition and is typically thicker and tangier; quark comes from Central Europe and is milder. You can substitute one for the other 1:1 in almost any recipe.

Which has more protein, skyr or quark?

Essentially the same — roughly 11g per 100g for skyr and 12g for quark, though it varies more between brands than between the two categories. Check the label rather than the name if you're optimising to the gram.

Can I use skyr in quark recipes?

Yes, 1:1. Expect a slightly tangier result and a marginally thicker batter or filling. If a recipe is delicately sweet, you may want a touch more sweetener to balance skyr's sharper flavor.

Is skyr or quark better for weight loss?

Neither has a real edge — both deliver high protein for very few calories, which is what actually matters for satiety and adherence. Pick the one you'll happily eat every day; that consistency matters more than the marginal nutritional difference.

Why does skyr taste more sour than quark?

Different cultures and a longer, more aggressive straining process concentrate more lactic acid in skyr. Quark is typically cultured with milder strains and stirred smooth, which softens the perceived tang.

Skyr vs Quark: Protein, Taste & Which One to Buy