Table · field guide
Classic Sauerkraut
Sauerkraut is the easiest ferment there is. Two things go in the crock: shredded cabbage and salt. The cabbage makes its own brine, and wild bacteria do the rest over 1 to 4 weeks. No canner, no starter, no special skill. Just weigh your salt, keep the cabbage under the brine, and be patient.
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Why this one works
Salt pulls water out of the cabbage. That water becomes a brine, and the brine keeps out the bad bacteria while the good ones sour the cabbage. This is why the salt amount matters more than anything else here.
Aim for about 2% salt by weight, which is roughly 1 to 1.5 tablespoons of pickling salt per pound of cabbage. Weigh it if you can. Too little salt and the kraut goes soft or off. Too much and it will not sour.
Pick and prep the cabbage
Use a firm, heavy head of fresh cabbage. Fresh cabbage has more moisture, so it makes brine faster and ferments cleaner. A limp head fights you the whole way.
Pull off the outer leaves and save one. Quarter and core the head, then shred it thin. Thin shreds pack tighter and release brine faster. One medium head, about 3 pounds, fills a half-gallon jar or small crock.
Keep it safe
Keep the cabbage under the brine the whole time. This is the one rule that matters most. Cabbage that pokes above the liquid can grow mold. Use a saved outer leaf and a clean weight to hold everything down, and press it below the surface each day.
Ferment at room temp, around 65 to 72 degrees, for 1 to 4 weeks. Taste it after a week. When it is as tangy as you like, move it to the fridge to slow it down. A little white film on top is usually harmless yeast you can skim, but if it smells rotten or grows fuzzy, colored mold, throw the whole batch out. Do not try to save it.
One honest note: this is slow food. It takes weeks, not an afternoon, and it will smell strong while it works. That sour smell is normal. A rotten or off smell is not.
How long it keeps
Once it tastes right, sauerkraut keeps in the fridge for months, often 6 or more, and slowly gets more sour. Keep it under its brine in the jar. If the top ever dries out, colors, or smells bad, toss it. This is a fresh ferment, not a canned shelf-stable product, so the fridge is its home.
Recipe
Ingredients
- 1 medium head green cabbage (about 3 lbs)
- About 1.5 to 2 tbsp canning or pickling salt (roughly 2% of the cabbage weight)
- 1 tbsp caraway seed (optional)
Method
- Pull off and save one clean outer leaf. Quarter, core, and shred the cabbage thin.
- Weigh the shredded cabbage. Measure salt at about 2% of that weight (1 to 1.5 tbsp per pound).
- In a big bowl, toss the cabbage with the salt and caraway. Let it sit 15 minutes to start drawing out water.
- Squeeze and massage the cabbage for 5 to 10 minutes until it releases enough brine to cover it.
- Pack the cabbage tight into a clean jar or crock, pressing so the brine rises above it.
- Lay the saved leaf on top and add a clean weight to hold everything under the brine.
- Cover loosely and ferment at room temp 1 to 4 weeks. Press it down and check daily that it stays under the brine.
- Taste after a week. When it is tangy enough, cap it and move it to the fridge.
Keep going
Questions, answered straight
About 2% of the cabbage weight, which is roughly 1 to 1.5 tablespoons of pickling salt per pound. Weigh it if you can. Salt is the safety step here, so do not eyeball it too loosely.
A thin white film is usually harmless yeast, called kahm yeast. Skim it off and keep the cabbage under the brine. But if you see fuzzy or colored mold, or it smells rotten, throw the whole batch out.
This recipe is a fresh ferment meant for the fridge, where it keeps for months. Canning it needs its own tested process and kills the live cultures. For shelf storage, follow a tested recipe from the National Center for Home Food Preservation.