Polish · Soup
Potatoes, mushrooms and sour rye starter in a rustic soup.
Photo by MOs810 · CC BY-SA 3.0 · Resized and converted to WebP for web display.
Zalewajka is a central Polish sour rye soup built around potatoes and żur starter. It is simpler and more potato-forward than many holiday żurek preparations.
Technique notes
Recipe status
A named independent cook or chef has published a prepared version of this dish, and that verification is credited below. It verifies their version—not Gastromica’s exact quantities, timing or method. Measured search evidence, exact-recipe testing and final JB approval remain separate gates.
How the new system works →Evidence behind this edition
Reviewed August 2, 2026. Research sources inform this edition. Any external cook verification is separately named, linked and limited to the independently prepared version described in that source.
potatoes; sour rye starter; onion/garlic; soup
Declared allergens: milk, wheat/gluten grain (verify labels and individual medical needs)
Cool promptly in shallow containers, refrigerate within two hours, keep no longer than the recipe's stated period or USDA's 3–4 day ceiling (whichever is shorter), and reheat leftovers to 165°F/74°C when reheating is appropriate.
Do not treat a quality date as proof of safety. Wild greens and mushrooms must be positively identified and food-grade. Diet labels do not guarantee absence of cross-contact. Dish-specific dairy/egg handling instructions remain applicable.
Chef Karol Okrasa is credited with preparing and publishing an independent version of this dish in Zalewajka for Kuchnia Lidla.
What this supports: dish identity, method, texture/doneness, serving result.
Verifies an independently prepared version of the dish, not Gastromica’s exact recipe. Okrasa's rich meat version includes sausage and bacon; regional meatless and mushroom variants are documented elsewhere.
Polish kitchen
Polish zalewajka combines potatoes, dried mushrooms and fermented rye starter in a tangy, satisfying soup.
Cover porcini with boiling water for 15 minutes. Strain the liquid through a fine sieve and chop mushrooms.
Cook onion in butter 7 minutes. Add potatoes, mushrooms, soaking liquid, stock and bay; simmer 15 minutes.
When potatoes are tender, stir in żur starter and marjoram. Simmer gently for 8 minutes.
Whisk sour cream with a ladle of soup, return it to the pot without boiling, then season and add dill.
Review ingredient labels for allergens and cross-contact. Follow the recipe’s handling notes, refrigerate perishable food promptly, and use an instant-read thermometer where a safe internal temperature is specified.
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Research EditionGood to know
Zalewajka is a central Polish sour rye soup built around potatoes and żur starter. It is simpler and more potato-forward than many holiday żurek preparations.
Refrigerate for up to 3 days and reheat gently without a hard boil.
Serve with rye bread; a halved hard-boiled egg is a common optional addition.
