Danish Buttermilk Soup
Koldskål
A refreshing and lightly sweet cold soup made from buttermilk and yogurt, flavored with vanilla and lemon. Koldskål is a quintessential Danish summer dish, often served with crunchy cookies called Kammerjunker.
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🧂 Ingredients
- 1 liter Buttermilk
- 500 g Plain yogurt(full-fat recommended)
- 4 tbsp Sugar(or to taste)
- 1 tsp Vanilla extract(or seeds from 1/2 vanilla bean)
- 1 tbsp Lemon juice
- 1 serving Kammerjunker(for serving)
- 1 serving Fresh berries(optional, for serving)
👨🍳 Instructions
- 1
In a large bowl, whisk together the buttermilk, plain yogurt, sugar, and vanilla extract until the sugar is dissolved and the mixture is smooth.
- 2
Stir in the lemon juice. Taste and add more sugar if desired.
- 3
Cover the bowl and refrigerate for at least 1 hour to allow the flavors to meld and the soup to chill thoroughly.
- 4
To serve, ladle the chilled Koldskål into bowls. Top with Kammerjunker cookies and fresh berries, if using.
💡 Pro Tips
- ✓For a richer Koldskål, use a higher fat content yogurt.
- ✓If you don't have Kammerjunker, any crisp, plain cookie or biscotti can be used.
- ✓Some traditional recipes include egg yolks, but this version omits them for simplicity and safety.
✨ Twist Ideas
Inspiration for your own version of this recipe
- Add a pinch of lemon zest for extra citrus flavor.
- Use skyr or Greek yogurt for a tangier version.
- For a non-dairy option, use plant-based buttermilk and yogurt.