How to Make Sauerkraut (A Beginner's Guide)

Sauerkraut is the perfect first ferment. It needs only two ingredients, no special culture, and about ten minutes of hands-on work. The bacteria that turn cabbage into kraut already live on the cabbage itself — your only job is to give them a safe, salty, oxygen-free place to do their thing.

What you need

• 1 medium head of green cabbage (about 2 lb / 900 g)
• 1.5 teaspoons of fine sea salt (roughly 2% of the cabbage’s weight)
• A clean wide-mouth jar. A quart mason jar is the classic starting vessel. Scaling up for the season? A stoneware crock handles much bigger batches.
• A way to keep the cabbage submerged — a glass weight is ideal.

The golden rule of fermentation: keep your vegetables under the brine. Cabbage exposed to air can mold; cabbage under liquid ferments cleanly.

The method

1. Shred the cabbage. Quarter it, cut out the core, and slice into thin ribbons. Save one outer leaf.
2. Salt it. Put the cabbage in a big bowl and sprinkle the salt over it.
3. Massage. Squeeze and scrunch the cabbage with your hands for 5–10 minutes. It will go limp and release a pool of liquid — that liquid is your brine.
4. Pack the jar. Press handfuls of cabbage into your jar, pushing down hard so the brine rises above the cabbage. Leave a couple of inches of headspace.
5. Weigh it down. Fold the saved cabbage leaf on top, then add a weight so everything stays submerged.
6. Cover and wait. Seal with an airlock lid so gases can escape without letting air in.

How long does it take?

Leave the jar at room temperature (ideally 65–72°F / 18–22°C), out of direct sun.

• Days 3–5: You’ll see bubbles — fermentation is underway.
• Day 7: Start tasting. It should be pleasantly sour and still crunchy.
• Days 10–21: The flavor deepens. Stop whenever you like the taste.

When it’s ready, screw on a solid lid and move it to the fridge, where it keeps for months.

Troubleshooting

• White film on top? Usually harmless kahm yeast. Skim it off. Fuzzy, colored mold means start over — and weigh the cabbage down better next time.
• Too salty or not sour? Adjust the salt slightly next batch and give it more time.
• Not enough brine? Top up with a little salt water (1 tsp salt per cup of water).

That’s it. Once you’ve made one jar, you’ll see how forgiving the process is — and you’ll be eyeing carrots, beets, and garlic for your next batch.