Kærnemælkshorn (Buttermilk Horns) Recipe

Flaky, crescent-shaped Danish pastries with a buttery, laminated dough and tangy buttermilk flavor that creates an irresistible contrast of crisp exterior and soft, tender interior.
Difficulty:
Intermediate
Prep Time:
40 mins
Cook Time:
20 mins
Serves:
12 horns
An overhead shot of golden-brown buttermilk horns arranged on a rustic wooden board, their crescent shapes showcasing distinctive flaky layers. A cross-section view reveals the delicate honeycomb interior texture created by the laminated dough process. The pastries glisten slightly in soft morning light, with some displaying a light dusting of flour. A small ceramic bowl of homemade jam and a vintage pitcher of buttermilk sit alongside, while scattered almonds and a few fresh berries add color contrast. The warm tones of the baked pastries stand out against a neutral linen napkin, highlighting their perfect caramelization and buttery shine.

Ingredients

<ul class="ingredients-main-list"><li class="ingredients-single-item">500g all-purpose flour</li><li class="ingredients-single-item">250g cold unsalted butter, cut into small cubes</li><li class="ingredients-single-item">250ml buttermilk (kærnemælk)</li><li class="ingredients-single-item">50g granulated sugar</li><li class="ingredients-single-item">7g instant dry yeast</li><li class="ingredients-single-item">10g salt</li><li class="ingredients-single-item">1 egg, beaten (for egg wash)</li><li class="ingredients-single-item">2 tbsp sliced almonds (optional, for topping)</li></ul>

Equipment

<ul class="equipment-main-list"><li class="equipment-single-item">Rolling pin</li><li class="equipment-single-item">Pastry cutter or sharp knife</li><li class="equipment-single-item">Baking sheets</li><li class="equipment-single-item">Pastry brush</li></ul>
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Directions

<ol class="no-list-style"><li class="MethodStepper"><h4 class="step-title">Step 1</h4>In a large bowl, combine the flour, sugar, yeast, and salt. Mix well to distribute the dry ingredients evenly. Add the cold butter cubes and use your fingertips to work them into the flour mixture until you have pea-sized butter pieces. It's important not to fully incorporate the butter – these chunks will create the flaky layers in your pastry.</li><li class="MethodStepper"><h4 class="step-title">Step 2</h4>Pour in the cold buttermilk and stir with a wooden spoon until just combined. The dough will look shaggy and uneven – this is exactly what you want! The acidity in buttermilk not only adds flavor but also tenderizes the gluten, resulting in a more delicate pastry.</li><li class="MethodStepper"><h4 class="step-title">Step 3</h4>Turn the dough onto a lightly floured surface and gently press into a rough rectangle. Don't knead the dough as you would with bread; minimal handling keeps the butter cold and ensures flaky layers. Wrap the dough in plastic wrap and refrigerate for at least 30 minutes to relax the gluten and firm up the butter.</li><li class="MethodStepper"><h4 class="step-title">Step 4</h4>Remove the dough from the refrigerator and roll it out on a lightly floured surface into a large rectangle about 40x20cm (16x8 inches). Fold the dough into thirds like a business letter: fold one-third toward the center, then fold the opposite third over it. This is your first "turn" in the lamination process.</li><li class="MethodStepper"><h4 class="step-title">Step 5</h4>Rotate the dough 90 degrees, roll it out again to the same size rectangle, and repeat the folding process for your second turn. Wrap and refrigerate the dough for 30 minutes. This resting period is crucial – it allows the gluten to relax and the butter to firm up again, preventing it from melting into the dough.</li><li class="MethodStepper"><h4 class="step-title">Step 6</h4>Repeat the rolling and folding process two more times, for a total of four turns. Each turn multiplies the number of butter layers exponentially, creating the characteristic flakiness of Danish pastries. After the final turn, wrap the dough and refrigerate for at least 1 hour, or overnight for best results.</li><li class="MethodStepper"><h4 class="step-title">Step 7</h4>Preheat your oven to 200°C (390°F) and line two baking sheets with parchment paper. Remove the dough from the refrigerator and roll it out on a lightly floured surface to a rectangle about 40x30cm (16x12 inches) and approximately 3-4mm thick.</li><li class="MethodStepper"><h4 class="step-title">Step 8</h4>Cut the dough into triangles: first cut the rectangle in half lengthwise, then cut each half into 6 triangles. For the classic horn shape, make the triangles about 10cm wide at the base and 15cm in height. Make a small slit in the middle of the base of each triangle – this helps achieve the curved crescent shape.</li><li class="MethodStepper"><h4 class="step-title">Step 9</h4>Roll each triangle starting from the base toward the tip, gently stretching the dough as you roll. Place the horns on the prepared baking sheets with the tip tucked underneath to prevent unraveling during baking. Curve the ends inward to form a crescent shape.</li><li class="MethodStepper"><h4 class="step-title">Step 10</h4>Brush each horn generously with the beaten egg wash, which will give them a beautiful golden shine. If using, sprinkle with sliced almonds. Allow the horns to rest and rise slightly for about 15-20 minutes before baking – this final proof gives them more volume and lightness.</li><li class="MethodStepper"><h4 class="step-title">Step 11</h4>Bake in the preheated oven for 18-20 minutes until deeply golden brown. The high temperature causes the water in the butter to evaporate quickly, creating steam that separates the dough into distinct layers. Watch carefully in the last few minutes to avoid over-browning.</li><li class="MethodStepper"><h4 class="step-title">Step 12</h4>Remove from the oven and transfer to a wire rack to cool slightly. These pastries are best enjoyed when still warm, when the contrast between the crisp exterior and soft interior is most pronounced. Store any leftovers in an airtight container and refresh briefly in a warm oven before serving.</li></ol>

Nutrition Facts (per serving)

🍽️ Serving Size: 1 hand pie
🔥 Calories: 425 calories
🥑 Fat: 28 g
🧈 Saturated Fat: 14 g
🍞 Carbohydrates: 32 g
🍭 Sugar: 3 g
🍗 Protein: 15 g
🫀 Cholesterol: 95 mg
🧂 Sodium: 450 mg

Chef’s Notes

A few helpful details for making this recipe.

Why is the lamination process so important for Danish pastries?

Lamination creates the signature flaky texture in Danish pastries by forming alternating layers of dough and butter. When baked, the butter melts and creates steam, forcing the dough layers to separate and creating that distinctive honeycomb interior structure with a crisp, golden exterior.

Can I make these flaky pastries in advance and freeze them?

Yes, these laminated pastries freeze beautifully. You can freeze them either before or after baking. For unbaked pastries, freeze shaped horns on a tray, then transfer to freezer bags. For baked ones, cool completely before freezing and refresh in a warm oven before serving.

What makes buttermilk essential to this Nordic pastry recipe?

Buttermilk is crucial as it provides the distinct tangy flavour that defines authentic Kærnemælkshorn. Additionally, the acidity in buttermilk tenderises the dough by breaking down gluten proteins, resulting in a more delicate crumb while maintaining the flaky structure.

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