Polish Soup in a Bread Roll: Żurek Recipe

Polish soup in a bread roll is żurek, a tangy rye-soured soup served in a hollowed, crusty loaf or roll. This version combines fermented rye starter, fresh Polish sausage, potatoes and marjoram, then finishes each bread bowl with a hard-boiled egg and a spoonful of horseradish cream.

Ingredients

4 round crusty bread rolls, about 6 to 7 inches (15 to 18 cm) wide and 7 to 9 oz (200 to 255 g) each
12 oz (340 g) uncooked fresh Polish pork sausage, such as biała kiełbasa, in links
1 tablespoon (15 ml) neutral oil
1 medium yellow onion, about 7 oz (200 g), finely chopped
2 garlic cloves, finely chopped
12 oz (340 g) waxy potatoes, peeled if desired and cut into ½-inch (1.3 cm) cubes
6 cups (1.4 L) low-sodium chicken or pork broth
2 bay leaves
1 teaspoon (1 g) dried marjoram, plus more to finish
1½ cups (360 ml) Polish fermented rye soup starter, called żurek zakwas or zakwas żytni, shaken before measuring
½ cup (120 g) sour cream, at room temperature
1 tablespoon (15 g) prepared horseradish, or more to taste
4 large eggs
½ teaspoon (3 g) fine salt, plus more to taste
¼ teaspoon (0.5 g) black pepper, plus more to taste
1 tablespoon (15 g) chopped fresh dill or parsley, optional

Instructions

Prepare the bread bowls. Heat the oven to 400°F (200°C). Slice a cap from each roll and set the caps aside. Pull out the soft interior, leaving a sturdy wall about ½ inch (1.3 cm) thick; save the crumbs for another use. Put the rolls and caps cut-side up on a baking sheet. Toast for 8 to 10 minutes, until the insides feel dry and the edges are lightly crisp. Set aside while you make the soup.
Boil the eggs. Put the eggs in a small saucepan and cover them with about 1 inch (2.5 cm) of cold water. Bring to a boil, cover the pan, turn off the heat and leave the eggs in the hot water for 10 to 12 minutes. Transfer them to cold water, then peel once cool enough to handle. For hard-boiled eggs, cook until both the yolk and white are firm.
Brown the sausage. Heat the oil in a large, heavy pot over medium heat. Add the fresh sausage links and brown them for about 5 to 6 minutes, turning so several sides color. They do not need to be cooked through yet. Transfer the links to a plate; leave the flavorful drippings in the pot.
Soften the aromatics. Add the onion to the pot and cook for 4 to 5 minutes, stirring, until softened but not deeply browned. Stir in the garlic, marjoram, salt and pepper and cook for 30 seconds. If the pot looks dry, add a splash of broth rather than extra oil.
Simmer the potatoes and sausage. Add the potatoes, broth and bay leaves. Return the sausage to the pot and bring the liquid to a gentle simmer. Partially cover and cook for 15 to 20 minutes, until the potatoes are tender when pierced and the sausage is cooked through. Check a thick sausage with a food thermometer: USDA FSIS lists 160°F (71°C) as the safe minimum for ground pork sausage. If it has not reached that temperature, simmer a few minutes longer and check again.
Add the rye starter. Shake or stir the fermented rye starter well, then pour it into the soup. Bring the soup back to a gentle simmer for 5 minutes; avoid a hard boil, which can make the sour flavor seem harsh and can cause the cream to separate later. Taste the broth. Add more starter for a sharper, fuller rye tang, or a little broth if it is too intense.
Finish with cream and horseradish. Whisk the sour cream and horseradish together in a bowl. Stir in a ladleful of hot soup a little at a time to warm the mixture, then turn the soup to low and stir the cream mixture into the pot. Warm gently for 1 to 2 minutes without boiling. Taste and adjust the salt, pepper, marjoram or horseradish. Remove the bay leaves.
Fill and serve. Cut each sausage link into thick slices, or leave the links whole for a heartier bowl. Divide the potatoes and soup among the toasted rolls, add sausage and a halved egg to each, and finish with dill or parsley if using. Serve the bread caps alongside for dipping, and bring any extra soup to the table in a jug or bowl.

Tips

Look for fermented rye starter. Polish groceries and some Eastern European shops sell żurek zakwas in bottles or cartons, often near soups and pickles. Shake it well because rye flour settles. Its acidity and thickness vary by brand, so begin with the listed amount and adjust after tasting.
Use a substitute only if needed. If you cannot find zakwas, whisk ¾ cup (90 g) rye flour with 2 cups (480 ml) cool water and simmer it in a separate saucepan for 10 minutes, whisking often. Stir it into the soup with 1 tablespoon (15 ml) lemon juice, taste, and add more lemon a teaspoon at a time. This gives some rye body and tartness, but it will lack the rounded fermented flavor of true starter.
Keep the bread bowl sturdy. Choose rolls with a firm crust and an even shape; very soft dinner rolls can leak. Toast the hollowed rolls before filling, and ladle in the soup just before serving rather than letting it sit in the bread.
Temper the sour cream. Adding cold cream straight to a hot, boiling pot can leave small curds. Warming it with a little soup first and keeping the pot below a boil gives the broth a smoother finish. If you prefer a lighter soup, use less cream rather than skipping the tempering step.

Serving Suggestions

Serve each filled roll on a plate with its toasted cap beside it. The cap works as a lid while the soup is hot, then as a piece of bread to dip into the broth. A halved egg is a common, practical garnish; add it at the end so the yolk stays neat and visible. A little extra marjoram, chopped dill or parsley adds a fresh herbal note without covering the soup’s sour rye character.

Because the bread bowl is filling, keep accompaniments simple. A crisp cucumber salad, pickled vegetables or a small cabbage salad provides a cool contrast, while rye bread on the side is useful if you are serving the soup in ordinary bowls instead. For a meal with several courses, serve smaller portions in small rolls or ladle the soup into cups and offer sausage, egg and bread separately. Put extra horseradish on the table so each person can adjust the sharpness.

Variations

Żurek has regional and family variations, so the balance of sourness, meat and garnish is not fixed. Some versions include smoked sausage or bacon; this recipe uses fresh white Polish sausage for a milder, savory broth. If using fully cooked smoked kielbasa instead, slice it and brown it briefly, then add it during the last 10 minutes of simmering so it warms without becoming tough. Check package directions, since products differ.

For a meat-free bowl, replace the meat broth with vegetable broth and omit the sausage. Brown sliced mushrooms in the oil until they release their moisture and begin to color, then continue with the onion. The soup will be lighter and more earthy; add a little extra marjoram and horseradish to bring out its savory edge. You can also use vegetable broth with the original sausage if you simply want to change the broth base.

To make the soup without bread bowls, serve it in warmed soup bowls with slices of crusty rye or sourdough on the side. If your starter is especially sharp, use 1 cup (240 ml) first and add more after tasting. For a thicker result, mash a few cooked potato cubes against the side of the pot and stir them back in. A small pinch of caraway is another possible variation, but keep it restrained because its flavor can quickly dominate the marjoram and rye.

Storage and Reheating

For the best texture, store the soup, bread rolls and peeled eggs separately. Let the soup stop steaming, then refrigerate it within 2 hours of cooking in a covered, shallow container. Cooked soup keeps for 3 to 4 days in the refrigerator. Refrigerate the eggs in their shells if possible, and use them within 1 week; keep the toasted or hollowed rolls in a separate airtight container at room temperature for up to a day. Filled bread bowls do not store well because the soup quickly softens the crumb.

Reheat only the soup you plan to serve, in a saucepan over medium-low heat, stirring occasionally until steaming hot throughout. If it has thickened, loosen it with a splash of broth or water. For leftovers, USDA FSIS recommends reheating to 165°F (74°C); check the center with a food thermometer. Avoid boiling after the cream has been added. Reheat the soup before filling freshly toasted rolls, and add a fresh egg or garnish if desired. The soup can also be frozen without the bread bowls for up to 2 months, though the potatoes may turn a little grainy after thawing. Thaw overnight in the refrigerator and reheat as above.

Frequently Asked Questions

What does żurek taste like?

It is savory, gently sour and slightly earthy from fermented rye, with herbs and broth rounding out the tang. The sausage adds richness, while horseradish brings a sharper finish. The exact acidity depends on the starter, so tasting before serving is useful.

Can I make żurek without a bread bowl?

Yes. The soup is often served in a regular bowl, and crusty bread on the side is an easy alternative. Make the bread bowls only when you want an edible serving vessel; the soup itself does not depend on them.

Where can I buy żurek starter?

Check Polish or Eastern European grocery stores, specialty food shops and the international section of larger markets. Look for a fermented rye soup starter labeled żurek zakwas or zakwas żytni. Keep it refrigerated as directed on its package and shake it before measuring.

Can I make the soup ahead?

Yes. Make the soup a day ahead, cool and refrigerate it promptly, then reheat it gently and check that it reaches 165°F (74°C). For the smoothest texture, you can hold back the sour cream mixture and stir it in while reheating. Toast the bread bowls and cook or peel the eggs close to serving time.

Why did my soup become too sour?

Fermented starter strength varies, and some brands are much sharper than others. Stir in extra broth a little at a time, then taste again; a small additional spoonful of sour cream can soften the perception of acidity. Next time, begin with less starter and add more gradually after the soup simmers.

Can I use smoked sausage instead of fresh sausage?

Yes. Use about 12 oz (340 g) sliced smoked kielbasa, brown it briefly for flavor, and add it near the end so it heats through without drying out. Fresh white sausage gives a less smoky broth, while smoked sausage makes the soup more robust and changes its traditional flavor profile.

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Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes

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