Name: Polish Sauerkraut with Dried Mushrooms and Linseed Oil (Kapusta z olejem lnianym i grzybami)
Prep time: 20 min
Cook time: 65 min
Total time: 565 min
Yield: 6 servings
Cuisine: Polish
Ingredients: 40 g dried forest mushrooms, inspected and briefly rinsed; 500 ml cold water for soaking; 800 g sauerkraut, drained; rinse briefly only if very salty; 180 g yellow onion, finely chopped; 350 ml strained mushroom soaking liquid; 250 ml water, plus more as needed; 1 bay leaf; 1 g freshly ground black pepper; 0–2 g fine salt, only if needed after tasting; 20 ml refined rapeseed oil; 20 g wheat flour; 45 ml cold-pressed linseed oil, refrigerated until serving

A wide view of „Polish Sauerkraut with Dried Mushrooms and Linseed Oil (Kapusta z olejem lnianym i grzybami)“ arranged on a table for serving.

Yield 6 servings

Serving size one-sixth of the finished cabbage and linseed oil; bread and other sides excluded

Dietary classification meatless; contains wheat/gluten

Prep time 20 minutes

Ingredients ↓

Recipe at a glance

Polish Sauerkraut with Dried Mushrooms and Linseed Oil (Kapusta z olejem lnianym i grzybami)

Excerpt: Soft, gently sour sauerkraut and dried forest mushrooms make a hearty meatless side, finished with cold linseed oil at the table.

Kapusta z olejem lnianym i grzybami is a Mazovian dish listed by Poland’s Ministry of Agriculture as a traditional product. The official description centers on sauerkraut, dried mushrooms, linseed oil and spices, with a thick texture and a mild sourness. It is associated with holiday cooking in Mazowsze, where dried mushrooms and linseed oil enriched cooked cabbage.

This measured home version keeps those defining ingredients in a practical six-serving recipe. Dried mushrooms bring a deep, earthy aroma to the sauerkraut, while onion softens the acidity. A small flour roux gives the finished cabbage a spoonable, gently thick consistency.

There is one deliberate adaptation: nutrition guidance from Poland’s National Centre for Nutrition Education says linseed oil should be added cold, not heated. The oil is therefore spooned over each serving at the table; refined rapeseed oil is used for the roux. This is a home adaptation of the registered dish, not the exact process of a registered producer.

Serve the cabbage warm as a side or as part of a meatless holiday meal. Taste before salting, since sauerkraut varies considerably in salt and acidity. The cold oil is an essential part of the flavor, so keep it chilled until serving and follow the bottle’s use-by instructions.

Tips for success

Inspect dried mushrooms and rinse briefly before soaking; strain the soaking liquid through a fine sieve or clean cloth to catch grit.
Soak the mushrooms covered in the refrigerator, not on the counter.
Drain the sauerkraut well. Rinse it briefly only if it tastes very salty, because rinsing also removes some of its tang.
Simmer gently until the cabbage is tender but still has some shape; add water in small increments if the pan gets dry.
Whisk hot cooking liquid into the roux gradually before returning it to the pot to prevent lumps.
Keep linseed oil cold and add it to portions at the table; do not heat it in the pan.

Ingredients

Cabbage and mushrooms

40 g dried forest mushrooms, inspected and briefly rinsed
500 ml cold water for soaking
800 g sauerkraut, drained; rinse briefly only if very salty
180 g yellow onion, finely chopped
350 ml strained mushroom soaking liquid
250 ml water, plus more as needed
1 bay leaf
1 g freshly ground black pepper
0–2 g fine salt, only if needed after tasting

Roux and cold finish

20 ml refined rapeseed oil
20 g wheat flour
45 ml cold-pressed linseed oil, refrigerated until serving

Method

Directions

Soak the mushrooms.Check the dried mushrooms for grit or debris and rinse briefly. Put them in a covered bowl with 500 ml cold water and refrigerate for 8 hours or overnight. Lift out the mushrooms, strain the liquid through a fine sieve lined with clean cloth, and chop the mushrooms into bite-size pieces.
Start the cabbage.Put the drained sauerkraut, mushrooms, onion, 350 ml strained soaking liquid, 250 ml water and bay leaf in a covered 4 L saucepan. Bring just to a boil, then lower the heat and simmer gently for 45–55 minutes, stirring occasionally. The cabbage should be tender but retain some shape. Add water in 50 ml increments if the pan becomes dry. Remove the bay leaf.
Make the roux.Warm the refined rapeseed oil in a small pan over low heat. Whisk in the flour and cook, stirring, for 2–3 minutes until smooth and pale blond; do not brown it. Gradually whisk in about 150 ml hot cooking liquid until smooth, then stir this mixture into the cabbage.
Finish the cabbage.Simmer for 5 minutes, stirring, until the flour is fully cooked and the cabbage is thick but still moist. Stir in the black pepper. Taste, then add up to 2 g salt only if needed.
Serve with cold oil.Serve the cabbage warm. Keep the linseed oil refrigerated until serving, then spoon 7.5 ml (1½ teaspoons) over each portion at the table. Do not stir the oil into the pot or reheat it. This cold finish is the practical adaptation used here.

Nutrition and allergens

Energyabout 160 kcal per serving
Proteinabout 4 g
Fatabout 10 g
Saturated fatabout 1 g
Carbohydratesabout 15 g
Fibreabout 5 g
Sodiumabout 900 mg

Wheat flour contains gluten. Use a verified gluten-free alternative if needed and check all labels for cross-contact. Keep linseed oil refrigerated and follow the package’s storage and use-by instructions. Refrigerate leftovers promptly and reheat the cabbage throughout to 74 °C before serving; add fresh cold oil at the table.

Nutrition and allergens

Serving, make-ahead and storage: Serve warm with boiled potatoes, rye bread or another meatless holiday dish. The cabbage should be thick enough to sit on a spoon but moist, not dry. Add the linseed oil only after portions are served so it remains cold.

Serving, make-ahead and storage: You can soak the mushrooms overnight in the refrigerator and cook the cabbage ahead. Keep the oil in its original closed bottle in the refrigerator and check its use-by date. Add fresh cold oil to each portion when serving.

Serving, make-ahead and storage: Cool leftovers in shallow containers and refrigerate within 2 hours. Keep them at or below 4 °C and use within 3–4 days. Reheat the cabbage throughout to 74 °C; add cold linseed oil only after serving. Avoid heating the oil with the leftovers.

Serving, make-ahead and storage: Sauerkraut can be rinsed briefly to reduce salt and acidity, but the final dish will taste milder. For a gluten-free version, use a suitable gluten-free flour blend and check the package directions; the recipe as written contains wheat.

Estimate basis: one-sixth of the recipe, modeled with generic sauerkraut, dried mushrooms, onion, flour and measured oils. Sodium varies greatly by sauerkraut brand and whether salt is added; bread and other sides are excluded.

In closing

Sauerkraut, dried mushrooms and linseed oil give this Mazovian dish its distinctively earthy, gently sour character.
Keep the linseed oil cold and spoon it over portions only when serving.

Polish Sauerkraut with Dried Mushrooms and Linseed Oil (Kapusta z olejem lnianym i grzybami)

Tips for success

Ingredients

Cabbage and mushrooms

Roux and cold finish

Method

Nutrition and allergens

Nutrition and allergens

In closing

Polish National Dishes

Łódź-Style Pork Knuckle with Braised Cabbage (Golonka z kapustą zasmażaną)

Polish Potato and Pea Dish (Kapusta Dębowa)

Polish Sauerkraut and Pea Dish (Kapusta z Grochem z Radziwiłłowa)