Sos grzybowy - Polish Mushroom Sauce
Photographer: Piotr Półtorak Copyright: Traditional Recipes

Sos grzybowy - Polish Mushroom Sauce

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Author: Piotr Półtorak

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Mushroom sauce, especially the one made from dried wild mushrooms, is one of the most characteristic and recognizable additions to Polish cuisine. It combines the taste of nature and the tradition of foraging. In Poland, a country with rich forests and a long history of mushroom picking, mushrooms have always been one of the most valuable gifts of the season. Both fresh and dried mushrooms occupied a special place in home pantries. Dried porcini, bay boletes, and butter mushrooms are characterized by their intense aroma. After soaking and processing in sauce, they release their deep flavor, which makes such sauces irreplaceable in many traditional Polish dishes. In Poland, mushroom picking was almost a ritual. The sauce made from these gifts of the forest evokes memories of autumn walks in the woods. Such trips, usually taking place early in the morning, often ended with a basket full of delicious mushrooms. These gifts of the forest were then used fresh in soups or sauces, marinated, or simply dried to preserve them for many months.

In fact, it is not known how or when mushroom sauce was created (or became widespread in this area). However, the use of dried mushrooms has a centuries-old tradition. Therefore, the history of mushroom sauce, and in particular dried mushroom sauce, is deeply rooted in practicality. As I mentioned earlier, drying was used to preserve food for the colder months. Although mushrooms themselves do not have many nutritional values, adding them to other dishes often diversified their taste. This was especially true in the winter season, when access to fresh ingredients was limited. Perhaps this is why this aromatic sauce gained a place not only in everyday meals, but also as part of Christmas celebrations, such as Christmas Eve. During this period, fasting dishes based on mushrooms and their aroma have long been part of the customs. Christmas Eve mushroom sauce, prepared only from mushrooms and spices, was meant to symbolize both modesty and fullness of flavor.

In Polish culinary tradition, mushroom sauce is a versatile accompaniment. It goes well with meat, pasta, groats, potatoes, but also with main courses such as roasts. Its flavor is deep, often described as aromatic, slightly earthy, and intense. This is due to the natural essence of dried mushrooms, which is released during soaking and slow cooking. It is the dried mushrooms that give this sauce its character, distinguishing it from sauces made from champignons or other cultivated mushrooms. The flavor is more concentrated and rich, while the aroma evokes the atmosphere of the forest and autumn.

Over time, mushroom sauce recipes have evolved. In addition to older versions of dried mushroom sauce, today there are versions with the addition of cream, white wine, garlic, onion, or fresh herbs. Dried mushrooms remain the basic ingredient. Poles appreciate its versatility (from everyday dinners to festive family meals). It is its tradition, deep flavor, and aroma that make mushroom sauce one of the most valued elements of Polish home cooking.

Recipe informations:

timer

Preparation

90 minutes
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Total

120 minutes
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Yield

Servings 6
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Base ingredients

  • Wild mushrooms: 30-50 g (about a handful of dried mushrooms or one and a half times as many regular ones)
  • Butter: 2-3 tablespoons (about 30-40 g)
  • Wheat flour: 1-2 tablespoons (approx. 15-20 g)
  • Water from soaking the mushrooms / broth: approx. 1.25 cups (300-350 ml)
  • Salt and pepper to taste

Ingredients for extended version with cream

  • Wild mushrooms: 30-50 g
  • Butter: 2-3 tablespoons (approx. 30-40 g)
  • Wheat flour: 1-2 tablespoons (approx. 15-20 g)
  • Cream (18-30%): approx. 100-200 ml
  • Water from soaking the mushrooms / broth: approx. 1-1.5 cups (250-350 ml)
  • Salt and pepper to taste
  • (optional) parsley for serving

Ingredients for the latest, popular variant

  • Wild mushrooms: 50-300 g — less for lighter versions, more if you want a very intense flavor
  • Water for soaking: approx. 250-450 ml
  • Butter: 2-3 tablespoons (30-40 g)
  • Flour: 1-2 tablespoons (15-20 g)
  • Onion: 1 medium (optional)
  • Sour cream (18-30%): 150-200 ml
  • Broth (vegetable/mushroom): approx. 500-700 ml
  • Salt and freshly ground pepper: to taste
  • Parsley: optional for sprinkling

Preparation for basic mushroom sauce (mushrooms + butter + flour)

1. Soak the mushrooms

Rinse the dried mushrooms and cover with water. Leave for at least 30 minutes until they soften well, then drain them, keeping the soaking water - this will be the aromatic base of your sauce.

2. Prepare the aroma

Melt the butter in a saucepan and gently fry the mushrooms to release their aroma.

3. Add the flour

Sprinkle the mushrooms with flour and stir until the flour combines with the fat and begins to brown slightly, creating a roux.

4. Thickening

Slowly pour in the mushroom soaking water or broth, stirring to avoid lumps. Cook for a few minutes until the sauce thickens and develops an intense flavor.

Preparation for extended mushroom sauce (with cream)

1. Soak the mushrooms

Pour hot water over dried mushrooms and set aside for 30-60 minutes to soften. Keep the soaking water—it is crucial for the flavor.

2. Frying

Fry the mushrooms in butter until they become aromatic and slightly soft.

3. Roux

Add flour and stir to combine with the fat, creating the base of the sauce.

4. Adding liquids

Gradually pour in the mushroom soaking water or broth, stirring constantly, until the sauce thickens.

5. Cream

When the sauce has reduced slightly, pour in the cream and continue cooking until the sauce becomes creamy and smooth. Season with salt and pepper.

Preparation for the latest, popular variant

In a large bowl, pour hot water over the dried mushrooms and leave to soak for 30-60 minutes. Drain, reserving the water.
Sauté finely chopped onion (and garlic, if you want added aroma) in butter until soft and translucent.
Add the soaked mushrooms to the onion and fry for a few minutes, stirring to combine the flavors.
Slowly pour in the soaking water and broth (if using), stirring constantly until the sauce begins to thicken.
When the sauce has reduced slightly, pour in the cream and continue cooking until the sauce becomes creamy and smooth. Season with salt and pepper.