This easy sauerkraut recipe lets you make crunchy, tangy fermented cabbage at home with just two ingredients and a jar. It relies on natural lactic acid fermentation, which preserves the cabbage and develops that classic sour flavor without any vinegar or heat. It’s a forgiving, hands-off project that rewards patience with a probiotic-rich condiment you can customize to your taste.
Ingredients
- 1 medium green cabbage (about 2 lb / 900 g)
- 1 tablespoon fine sea salt (about 15 g), plus more if needed
- Optional: 1 teaspoon caraway seeds, juniper berries, or dill seeds
- Optional: 1–2 cloves garlic, smashed
Instructions
- Remove any wilted or bruised outer leaves from the cabbage. Set aside two or three of the large, clean outer leaves for later. Quarter the cabbage, cut out the core, and shred the quarters thinly (about 1/8-inch / 3 mm wide) using a knife, mandoline, or food processor.
- In a large bowl, toss the shredded cabbage with the salt. If using any optional spices or garlic, add them now. Massage the cabbage with your hands for 5–10 minutes. The cabbage will release liquid and shrink in volume. You should end up with a brine that pools when you press on the cabbage. If after 10 minutes there is very little liquid, sprinkle with another 1/2 teaspoon salt and massage for another 2 minutes.
- Pack the salted cabbage into a clean 1-quart (1-liter) wide-mouth glass jar. Press down firmly with your fist or a wooden spoon as you go to remove air pockets and submerge the cabbage in its own brine. Leave about 2 inches (5 cm) of headspace at the top.
- Take one of the reserved outer leaves, fold it if needed, and place it on top of the shredded cabbage as a cover. This leaf should hold the cabbage below the brine. If the brine doesn’t cover the cabbage, add a little water mixed with 1/2 teaspoon salt (use only if needed—too much water will dilute the flavor).
- Weigh the cabbage down so it stays submerged. You can use a small glass jar filled with water that fits inside the mouth of the big jar, or a food-grade plastic bag filled with brine (2 cups water + 1 teaspoon salt) placed on top of the leaf. Close the jar loosely with its lid, or cover with a cloth secured with a rubber band. The goal is to let gases escape while keeping out dust and insects.
- Place the jar on a tray or plate to catch any overflow. Leave it at cool room temperature, ideally 65–72°F (18–22°C), away from direct sunlight. Let it ferment for 5–10 days. Check it every day: press the cabbage down if it floats above the brine, and skim off any scum or mold that appears on the surface (a little white film is harmless, but discard any fuzzy mold).
- Start tasting after 5 days. Once it reaches a tanginess you like, remove the weight and the outer leaf, screw on the lid, and refrigerate. The sauerkraut will continue to ferment slowly in the cold, developing more flavor over time.
Tips
- Use the right salt: Use non-iodized salt like fine sea salt or kosher salt. Iodine and anti-caking agents can inhibit fermentation and make the brine cloudy. If using kosher salt, use about 1.5 times the amount by volume because it’s less dense.
- Keep it submerged: The most common mistake is letting cabbage float above the brine. That’s where mold grows. If you don’t have a glass weight, use a small zip-top bag filled with 2 cups water and 1 teaspoon salt; the salt prevents the bag’s water from drawing out the cabbage’s brine.
- Temperature matters: Fermentation is faster in warm weather and slower in cool. If your kitchen is above 75°F (24°C), the sauerkraut may become soft or mushy. If it’s below 65°F (18°C), it may take longer than 10 days. A cool basement or a closet away from heat is ideal.
- Don’t worry about scum: A thin white or creamy film on top is called kahm yeast and is harmless—just skim it off. Green, blue, pink, or fuzzy mold means the cabbage was exposed to air; remove the moldy leaf and any affected cabbage, and make sure the rest stays submerged. If the mold has spread throughout, discard the batch.
Serving Suggestions
Serve sauerkraut cold as a side to sausages, pork chops, or roast chicken. It’s also great on a Reuben sandwich, stirred into mashed potatoes, or added to a grain bowl for a sour crunch. For a warm side, sauté it briefly in butter with a splash of white wine or apple juice—but don’t boil it, as that kills the beneficial bacteria.
Variations
- Spicy: Add 1–2 sliced fresh chilies or 1 teaspoon red pepper flakes along with the salt.
- Apple & Juniper: Shred 1 peeled apple with the cabbage and add 1 tablespoon juniper berries for a classic Eastern European flavor.
- Caraway: The most traditional addition is 1–2 teaspoons caraway seeds, which complement the cabbage’s earthiness.
- Red cabbage: Use red cabbage instead of green for a vibrant pink sauerkraut. It will be slightly less crunchy but just as tasty.
Storage and Reheating
Refrigerate the finished sauerkraut in a sealed jar. It will keep for at least 2 months, and often longer—up to 6 months if kept cold and submerged. The flavor will continue to sour slowly. If you see any surface mold, skim it off and make sure the rest is still submerged. You can eat it cold straight from the jar, or warm it gently in a skillet, but avoid boiling. Do not leave it at room temperature for more than a few hours, as fermentation will accelerate and turn it mushy.
Frequently Asked Questions
Why is my sauerkraut soft? Soft kraut usually means it fermented too warm (above 75°F/24°C) or for too long. Try a cooler spot next time and check it earlier. Also, make sure you massaged the cabbage enough to release brine—without enough liquid, the cabbage can become limp.
How do I know if it’s spoiled? Spoiled sauerkraut has a foul, putrid smell (not just sour), a slimy texture, or visible mold that has spread throughout. If in doubt, throw it out. A little white film on top is normal, but any pink, green, or fuzzy mold is a sign to discard.
Can I use a regular metal lid? Yes, but the acid and salt can corrode the metal over time. Use a plastic lid or place a piece of parchment paper between the jar and the metal lid. During fermentation, keep the lid loose to allow gas to escape, or use a cloth secured with a rubber band.
Do I need to add starter culture? No. Cabbage naturally carries lactic acid bacteria on its leaves. The salt and brine create an environment where those bacteria thrive and harmful bacteria cannot. Starter culture can speed things up, but it’s not necessary for a successful batch.
Why did my brine turn pink? A pinkish or reddish tint can come from the cabbage variety or from certain spices (like juniper). If it’s a bright pink, it could be a sign of yeast or bacteria—if the smell is off, discard. Usually, a slight pink hue is harmless.
Can I use iodized table salt? It’s best not to. Iodine can inhibit fermentation and make the brine bitter. Use non-iodized sea salt, kosher salt, or pickling salt. If you only have table salt, reduce the amount by about 20% because it’s finer and saltier by volume.
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Safety notes: safe minimum internal temperatures from USDA FSIS; raw and undercooked fish guidance from the U.S. FDA. Food safety notes
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