Zurek (Sour Rye Soup) Recipe
The fermented rye starter (zakwas) is what gives żurek its signature sourness, a flavor that can't be faked with vinegar or lemon alone, and simmering it with smoked sausage and bacon builds a savory backbone underneath that tang.
- Prep
- 20 min
- Cook
- 40 min
- Total
- 60 min
- Servings
- 6
Ingredients
- 2 cups fermented rye sour (zakwas na zurek)
- 4 cups chicken or vegetable stock
- 3/4 lb smoked kielbasa, sliced
- 4 slices bacon, chopped
- 3 cloves garlic, minced
- 1 tsp marjoram
- 1 tbsp prepared horseradish
- 1/2 cup heavy cream
- 6 large eggs, soft-boiled
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Instructions
- 1Cook the chopped bacon in a large pot over medium heat until crisp, then add the garlic and cook 30 seconds more.
- 2Add the sliced kielbasa and cook until lightly browned, a few minutes.
- 3Pour in the stock and bring to a simmer, then cook for 15 minutes to let the sausage flavor infuse the broth.
- 4Stir in the fermented rye sour and marjoram, and simmer gently for 10-15 minutes, do not let it boil hard.
- 5Whisk the horseradish into the cream, then stir the mixture into the soup to finish and slightly thicken it.
- 6Taste and season with salt and pepper, keeping in mind the sour base is meant to dominate.
- 7Ladle into bowls and top each with a halved soft-boiled egg.
Tips & variations
- Fermented rye sour (zakwas) is sold at Polish delis and some grocers, or can be started at home a few days ahead by fermenting rye flour and water.
- Some versions are served in a hollowed-out bread bowl, a fun presentation for a dinner party.
- White sausage (biala kielbasa) is the traditional choice in Poland, smoked kielbasa is a widely available substitute.
Storage & reheating
Refrigerate the soup base (without the eggs) up to 4 days. Reheat gently over low heat without boiling, and add freshly boiled eggs when serving leftovers.
Nutrition
A savory, tangy soup, the cream and sausage add most of the richness against the sour rye base.
Tips from the Tulo kitchen
- Taste the rye sour on its own before adding it, batches vary in sourness, and you may want to add more or less than the recipe calls for.
- A soft-boiled egg (not hard-boiled) is worth the extra care, the runny yolk enriches the broth as you eat.
FAQ
Where do I find fermented rye sour for żurek?
Look for zakwas na żurek at Polish or Eastern European grocery stores, either fresh in the refrigerated section or as a jarred concentrate. It can also be made at home from rye flour, water, and a few days of fermentation.
Can I substitute anything for the rye sour?
Not really for the true flavor, but in a pinch some cooks use sauerkraut juice or a mix of buttermilk and vinegar for a milder, less authentic approximation.
Is żurek traditionally served for a specific occasion?
Yes, it's a classic Easter breakfast dish in Poland, often served with hard-boiled eggs and white sausage, though it's enjoyed year-round as well.
