Rustic Kapuśniak: Polish Sauerkraut and Cabbage Soup

Why You’ll Love This Recipe

• Classic Polish comfort: bright sauerkraut tang balanced by silky potatoes and a rich pork rib broth.
• Smoky depth from bacon plus aromatic bay and caraway—simple ingredients, big flavor.
• Fresh cabbage lightens the soup so it’s hearty but not heavy.
• Finishes beautifully with dill and cool sour cream for a restaurant-quality bowl at home.

Grocery List

• Produce: Yellow onion, garlic, green cabbage, Yukon Gold potatoes, fresh dill
• Dairy: Sour cream, unsalted butter
• Pantry: Pork ribs, smoked bacon, sauerkraut, bay leaves, caraway seeds, black peppercorns, kosher salt, apple cider vinegar (optional)

Full Ingredients

Broth & Meat

• 1.5 lb (680 g) pork spare ribs or country-style ribs, cut between bones
• 8 cups (1.9 L) cold water
• 2 bay leaves
• 1 tsp caraway seeds, lightly crushed
• 6 whole black peppercorns
• 1 tsp kosher salt (for the initial broth)

Aromatics & Smoky Base

• 6 oz (170 g) smoked bacon, cut into 1/2-inch lardons
• 1 large yellow onion, diced (about 1.5 cups)
• 2 garlic cloves, minced

Vegetables

• 1 lb (450 g) sauerkraut, drained and squeezed dry; reserve up to 1/2 cup brine
• 10 oz (300 g) green cabbage (about 1/2 small head), finely shredded
• 1 lb (450 g) Yukon Gold potatoes, peeled and cut into 3/4-inch cubes

To Finish & Serve

• 1 tbsp unsalted butter (optional, for sheen)
• 1/4 cup (10 g) fresh dill, finely chopped, divided
• 1–2 tbsp sauerkraut brine or apple cider vinegar, to taste
• 1/2–1 tsp additional kosher salt, to taste
• Freshly ground black pepper
• 3/4 cup (180 ml) sour cream, for serving (about 2 tbsp per bowl)

Step-by-Step Instructions

Step 1: Prep the vegetables and sauerkraut

Drain the sauerkraut in a sieve, pressing firmly to remove excess liquid; reserve up to 1/2 cup of the brine for seasoning later. If the strands are very long, chop them a bit. Finely shred the fresh cabbage. Peel and dice the potatoes into 3/4-inch cubes. Dice the onion, mince the garlic, and chop the dill (reserve some for garnish). Cut the ribs between the bones.

Step 2: Build a clean pork rib broth

In a large heavy pot or Dutch oven, combine the ribs, cold water, bay leaves, caraway seeds, peppercorns, and 1 tsp kosher salt. Bring to a boil over medium-high heat, then immediately reduce to a gentle simmer (barely bubbling; about 185–195°F / 85–90°C). Skim any foam for a clear broth. Partially cover and simmer for 45 minutes.

Step 3: Create the smoky base with bacon and aromatics

While the ribs simmer, cook the bacon in a skillet over medium heat until crisp, 6–8 minutes. Add the diced onion and cook until translucent and golden at the edges, 5–6 minutes. Stir in the garlic for 30 seconds. Scrape the bacon, aromatics, and rendered fat into the rib pot. Continue to simmer 15 minutes (total rib simmer so far: 60 minutes).

Step 4: Add potatoes to soften

Add the diced potatoes to the pot and simmer for 10 minutes. Starting the potatoes before introducing acidity helps them soften evenly and keep their creamy texture.

Step 5: Add sauerkraut and fresh cabbage

Stir in the sauerkraut and the shredded fresh cabbage. Simmer until the potatoes are tender and the cabbages are silky but still have a little bite, 10–12 minutes. Skim any excess fat if desired.

Step 6: Shred the rib meat and finish the pot

Use tongs to remove the ribs to a board. Pull the meat from the bones, discarding bones and any gristle, then return the meat to the soup. Stir in the butter (if using) and half the chopped dill. Season with freshly ground black pepper and 1–2 tbsp sauerkraut brine or cider vinegar, to taste. Add additional salt as needed (start with 1/2 tsp; adjust). Simmer 5 minutes, then turn off the heat and let the soup rest 5–10 minutes to marry the flavors.

Step 7: Serve with dill and a cool sour cream dollop

Ladle the soup into warm bowls. Top each serving with a generous dollop of sour cream and a sprinkle of the remaining dill. Serve with rye bread or boiled potatoes on the side, if you like. For a lightly creamy pot, you can temper a few spoonfuls of hot soup into 1/4 cup sour cream, then swirl it back into the pot just before serving (do not boil after adding).

Pro Tips

• Balance the tang: Taste before adding vinegar—often the reserved sauerkraut brine provides the perfect bright acidity.
• Potatoes first, acid second: Acidity can slow potato softening, so give the potatoes a 10-minute head start.
• Lightly crush caraway: A quick press with a knife releases fragrant oils without overpowering the soup.
• Don’t over-salt early: Bacon and sauerkraut are salty; season decisively at the end.
• Make it tomorrow: Kapuśniak is even better the next day as the flavors meld.

Variations

• Extra-smoky: Add a small smoked pork hock to the pot with the ribs; remove, shred, and return the meat. Reduce added salt.
• Creamier broth: Temper 1/2 cup sour cream with hot soup and stir into the pot off heat for a lightly creamy, pale-golden broth.
• Hearty grain boost: Add 1/3 cup pearl barley with the potatoes; you may need an extra 1–2 cups water as it cooks.

Storage & Make-Ahead

Refrigerate cooled soup in an airtight container for up to 4 days; it tastes even better on day 2. Freeze up to 3 months (potatoes soften slightly but hold up well). Reheat gently on the stovetop until steaming; do not boil after adding any dairy. Keep sour cream garnish separate and add just before serving. If planning to freeze, you can hold the potatoes out and add freshly cooked potatoes when reheating for best texture.

Nutrition (per serving)

Approximate values for 1 of 6 servings with sour cream: 430 calories; 28 g fat; 22 g carbohydrates; 20 g protein; 3 g fiber; 1200–1500 mg sodium (varies with sauerkraut and bacon). These are estimates.