Cuisine: The Polish Palate
Course: Condiments
Diet: Vegan, Gluten-Free, Vegetarian, Probiotic, Dairy-Free, Low-Fat, Low-Calorie, Raw, Pescatarian
Occasion: Christmas Eve, Winter Preserves, Pantry Stock, Culinary Heritage

Zakwas z Buraków (Traditional Polish Beetroot Kvass)

A deeply savoury, fermented beetroot brine, scaled to yield exactly 500ml of pure culinary gold for your barszcz.
Prep time 15m
Cook time 10m
Rest time 168h
Total 168h 25m
Yield
1
By Adam Dworak
Published: 30 July 2026
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Last Updated: 09 September 2026

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Ingredients

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Kitchen Kit

  • 2 Litre Glass Jar
  • Saucepan
  • Muslin / Linen Cloth
  • Fine Mesh Sieve
  • Peeler
  • Chopping Board
  • Chef's Knife
  • Rubber band
  • Wooden Spoon
  • 500ml Glass Bottle
A clear glass jar filled with red beets and a sliced garlic bulb, held by a person's hands over a rustic wooden table with bay leaves and coarse salt nearby. | Cook & Keeper - zakwas z burakow

Method

  1. Chuck the water into a saucepan, bring it to a rolling boil over a high heat (this will take about 5 to 7 minutes), and stir in the salt until entirely dissolved. Take it off the heat and let it cool completely to room temperature. This is your brine.
  2. Scrub and peel the beetroots, then chop them into chunky slices or rough cubes. Slice the garlic bulb in half crosswise—there is no need to peel the individual cloves.
  3. Sterilize a 2-litre glass jar or traditional stoneware crock. Layer the beetroot chunks, halved garlic bulb, bay leaves, and allspice berries tightly inside the vessel.
  4. Pour the completely cooled salted water over the vegetables. You must ensure every single piece is fully submerged under the liquid. Weigh the beets down if they decide to float.
  5. Cover the mouth of the jar loosely with a clean muslin cloth or a breathable kitchen towel, securing it tightly with an elastic band to keep the dust and fruit flies out.
  6. Stash the jar in a cool, dark place for 5 to 7 days. Check it daily and use a clean wooden spoon to gently skim off any white foam that rises to the surface.
  7. Once the liquid smells pleasantly sharp, acidic, and earthy, it is ready. Strain the deep ruby liquid through a fine sieve into a sterilized glass bottle to yield your clean 500ml of zakwas. Chill immediately. Chuck the spent vegetables or reserve them for a tart salad.
Chef's Note & Storage
Fridge up to 2 months. Strain out all solids and store the pure liquid in a sterilized, airtight glass bottle.
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A close-up of a clear glass jar filled with a deep red liquid, with visible floating spices and foam on the surface. | Cook & Keeper - zakwas z burakow

The Soul of the Polish Kitchen

A proper Zakwas z Buraków is not just an ingredient; it is a living, breathing foundation of Polish culinary heritage. Long before we had stock cubes and instant soured creams, preservation meant harnessing natural fermentation. This beetroot kvass requires nothing more than root vegetables, water, salt, time, and a bit of patience. We have scaled this specific recipe to yield exactly 500ml of pure, jewel-toned liquid—the absolute perfect amount for a single family batch of barszcz or a week of gut-friendly morning tonics.

CHEF'S SECRET: The most critical rule of fermentation is submersion. Anything exposed to the air will inevitably catch mould. If your beetroots insist on floating, weigh them down with a small sterilized ceramic ramekin, a glass weight, or even a folded cabbage leaf tucked neatly under the shoulders of the jar.

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The Patience of Fermentation

You cannot rush a Zakwas. The magic happens slowly in the dark. As the days pass, the liquid will shift from a watery pink to a viscous, vibrant crimson, taking on a complex acidity that vinegar simply cannot replicate. You are looking for a sharp, clean sourness with a robust, earthy backbone. Skim it gently, respect the process, and you will be rewarded with the true taste of the Old Country.

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Cook’s Notes & Discussion

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