Homemade Polish sauerkraut recipe

This homemade Polish sauerkraut recipe turns shredded cabbage and salt into tangy fermented cabbage. Salt draws out the cabbage juices, creating a brine in which lactic acid bacteria can work. Pack the cabbage tightly, keep it submerged throughout fermentation and refrigerate it when the flavor suits you.

Ingredients and equipment

For a small batch, use:

2 lb trimmed, firm white cabbage
18 g pickling or canning salt, about 2% of the cabbage weight
1 teaspoon caraway seeds, optional

Weigh the cabbage after removing damaged outer leaves and the core. If your quantity differs, multiply its weight by 0.02 to calculate the salt in the same units. A scale is useful because salts vary in crystal size. Avoid reducing the salt: it helps create suitable fermentation conditions.

You will also need a large bowl, a clean glass jar or food-grade fermentation crock, a food-safe weight and a lid that lets fermentation gas escape. Wash equipment in hot, soapy water and rinse well. Choose a container with room for the cabbage, its liquid and some headspace for bubbling.

Shred, salt and pack

Remove damaged outer leaves, rinse the cabbage and cut it into quarters. Cut out the core, then slice the cabbage into thin, even shreds.
Weigh the shreds and measure the salt at 2% of their weight. Put both in the bowl and massage firmly until the cabbage softens and releases liquid. Mix in caraway if using.
Pack handfuls into the jar, pressing down firmly to push out air pockets. Pour in all the liquid from the bowl.
Place the clean weight on top. The cabbage should be fully covered by its brine. Leave headspace and fit a fermentation lid or a loose lid that allows gas to escape.

If the cabbage does not release enough liquid to stay submerged, give it a little time and press again. If necessary, top up with brine made by dissolving 20 g salt in 1 liter of water. Keep the cabbage below the surface rather than adding extra dry salt.

Let the cabbage ferment

Place the jar on a tray away from direct sunlight at around 68 to 72°F (20 to 22°C). Check it daily. Press the weight down with a clean utensil if cabbage rises, and make sure the brine still covers it. Bubbling and cloudy liquid are normal as fermentation gets underway.

Begin tasting with a clean utensil after about a week. The cabbage will become more sour over time; a small batch may take 2 to 4 weeks to develop a fuller tang. Temperature and cabbage characteristics affect timing, so use flavor and texture as guides. It should smell pleasantly sour and retain some bite.

When it tastes right, transfer it to a clean covered jar if needed and refrigerate. Cold slows fermentation and helps preserve the texture. Keep the remaining cabbage submerged and use clean utensils to remove portions.

Check quality and use your sauerkraut

Discard the batch if it develops mold, a rotten smell or a slimy texture. Do not taste suspect food. A thin white film can appear on the surface, but if you cannot confidently identify growth or have doubts about the batch, discard it. Keeping cabbage submerged helps limit surface growth.

Refrigerate finished sauerkraut and enjoy it within a few months for best quality. This method makes refrigerated fermented cabbage; it is not a shelf-stable canning procedure. For pantry storage, use a current, tested canning recipe and follow its processing instructions.

Serve sauerkraut as a tart accompaniment to pork, or cook it into Polish hunter's stew and sauerkraut soup. If it tastes too sharp for a cooked dish, taste the recipe before rinsing: rinsing reduces both acidity and salt.

FAQ

Can I ferment red cabbage?

Yes, red cabbage can be fermented with the same salt proportion. It produces a different color and flavor from the white cabbage commonly used for Polish sauerkraut.

Why is my jar bubbling?

Bubbles are a normal sign that fermentation is producing gas. Use a lid designed to release gas or keep an ordinary lid loose during active fermentation, and place the jar on a tray to catch spills.

Can I add vinegar to speed it up?

Vinegar makes cabbage sour without waiting for fermentation, but it produces a different pickle. This recipe relies on fermentation, so allow time for the cabbage to develop its own tang.