You’ve seen sauerkraut and kimchi everywhere — at farmers markets, on trendy bowls, touted for gut health — but the price tag always stings. The secret? These fermented vegetables are embarrassingly easy and cheap to make at home. In just a few days, plain cabbage transforms into tangy, probiotic-loaded condiments that cost pennies per serving. Whether you want classic German sauerkraut, fiery Korean kimchi, or experimental flavors with beets and turmeric, the technique is nearly identical: shred vegetables, massage with salt until they release their own brine, pack into a jar, and let time and temperature do the heavy lifting.
How to Make Basic Fermented Sauerkraut and Kimchi
Both ferments follow the same fundamental process. The difference lies in seasoning and preparation style. Here’s the core method that works for either.
Ingredients
- 1 medium head of cabbage (about 2 pounds), any variety — red, green, or Napa work equally well
- 1-2 tablespoons of salt per pound of vegetables — use non-iodized salt only, as iodine inhibits fermentation
- Optional additions: garlic cloves, ginger, chili flakes, turmeric, caraway seeds, or fresh herbs depending on your flavor preference
- Filtered or dechlorinated water if needed to top off the brine
- A clean glass jar with enough capacity for your vegetables plus headspace
Method
Prepare and clean your produce
Remove any damaged outer leaves from your cabbage and set one clean leaf aside. Rinse the cabbage under cold water and pat dry. For kimchi, prepare additional vegetables like radish, scallions, or carrots by cutting them into thin sticks or small pieces. Set all prepared vegetables on a clean cutting board.
Shred or chop your cabbage
Using a sharp knife or mandoline, slice the cabbage into thin ribbons about the thickness of a coin. For kimchi, you can cut Napa cabbage into larger wedges if preferred. Place all shredded cabbage into a large mixing bowl, keeping the reserved leaf nearby.
Add salt and massage to release brine
Sprinkle salt evenly over the shredded cabbage — approximately one tablespoon per pound of vegetables. Using both hands, massage and squeeze the cabbage vigorously for 5-10 minutes. You’re breaking down cell walls so the cabbage releases its own liquid. The brine will accumulate at the bottom of the bowl. This step is crucial: you need enough liquid to submerge your vegetables.
Add seasonings for kimchi (optional for sauerkraut)
If making kimchi, prepare a paste by mincing fresh garlic and ginger, then mixing with chili flakes, fish sauce or soy sauce, and a touch of sugar. Add this paste to the cabbage along with any other prepared vegetables like radish or scallions. Mix thoroughly to distribute seasonings evenly. For plain sauerkraut, add just caraway seeds or keep it simple.
Pack vegetables into your jar
Transfer the cabbage mixture and all accumulated brine into your clean glass jar, pressing down firmly as you go. The vegetables should be completely submerged under their own liquid. This is essential — any cabbage exposed to air can develop mold. Use the reserved cabbage leaf to cover the top of the mixture, acting as a barrier between the vegetables and air.
Weigh down the vegetables
Place a weight directly on top of the reserved cabbage leaf to keep all vegetables submerged beneath the brine. This can be a small glass jar filled with water, a ceramic weight, or even a small bowl. Without this, vegetables will float and spoil. Leave about an inch of headspace between the weight and the jar’s rim to allow gases to escape.
Ferment at room temperature
Cover your jar loosely with a cloth, coffee filter, or loose lid — do not seal it tightly, as gases need to escape during fermentation. Place it on a shelf away from direct sunlight at room temperature, ideally between 55-75 degrees Fahrenheit. Check daily, tasting after 3-5 days for sauerkraut or 5-7 days for kimchi. It’s ready when the flavor suits you.
Transfer to cold storage
Once fermented to your taste preference, seal the jar and move it to a cool place — a refrigerator or cool root cellar. Cold slows fermentation dramatically, preserving your product for months. Properly fermented sauerkraut and kimchi last 4-6 months refrigerated, though they often disappear much faster.
- Always use non-iodized salt — pickling salt or sea salt work best. Iodized table salt contains additives that cloud the brine and interfere with beneficial bacteria.
- Taste your ferment starting on day three. Fermentation speed varies with temperature and personal preference, so there’s no single ‘done’ day. Warmer kitchens ferment faster; cooler ones take longer.
- If white surface mold appears, it’s usually harmless kahm yeast and can be skimmed off. However, fuzzy pink, green, or black mold means contamination — discard the batch and start fresh with better sanitation.
Essential Fermentation Equipment to Get Started
- Wide-mouth glass jars: Choose jars with wide openings for easy packing and removal of vegetables. Quart-size (32 oz) or half-gallon jars are ideal for beginners. Glass is essential because metal and plastic can react with salt and acidic brine over time.
- Fermentation weights: Purpose-made weights or DIY solutions keep vegetables submerged. Proper weighting prevents mold and ensures consistent fermentation. Options range from glass weights designed specifically for fermenting to simple water-filled jars.
- Breathable covers: Coffee filters, cheesecloth, or cloth covers allow gas escape while preventing dust and debris from settling on your ferment. Tight lids trap gases and can cause jar explosions, so covers are essential for safety and success.
- Quality salt: Non-iodized sea salt or pickling salt is non-negotiable for fermentation. Iodine and anti-caking agents in table salt cloud your brine and inhibit beneficial bacteria growth, ruining batches and wasting ingredients.
Bormioli Rocco Fido Jar 2 Quart
Best for: Serious fermenters and bulk batches
This Italian glass jar is the gold standard for fermentation. Its wide mouth makes packing and extracting vegetables effortless, while thick glass handles the pressure of active fermentation. The airtight seal is excellent for cold storage post-fermentation. Two-quart capacity means you can ferment enough to last weeks. Many experienced home fermenters keep several of these jars going simultaneously. The durable construction means it will last decades with proper care.
Check Current Price on Amazon →Ball Wide Mouth Mason Jar 32 oz
Best for: Beginners and small batches
The classic American mason jar works perfectly for fermentation at a fraction of specialty prices. The wide mouth fits hands and utensils easily, and the thick glass is durable. While the lid isn’t ideal for long-term fermentation (use a cloth instead), the jar itself is bulletproof reliable. A dozen jars cost less than two specialty fermentation jars, so beginners can experiment with multiple flavor variations simultaneously without breaking the budget.
Check Current Price on Amazon →Fermentools Glass Fermentation Weight Set
Best for: First-time fermenters who need clear guidance
This purpose-designed kit includes multiple glass weights, an airlock lid, and a cloth cover — everything needed to start immediately. The weights are sized for standard jars and ensure consistent submersion. Beginner-friendly instructions are included, removing guesswork. The glass weights never leach chemicals and last forever. This all-in-one approach means you’re not shopping across multiple retailers or guessing which tools to buy first.
Check Current Price on Amazon →Canning Essentials Non-Iodized Sea Salt 26 oz
Best for: High-volume fermenters
This bulk sea salt is specifically processed for fermentation and pickling, with no additives or anti-caking agents. At roughly two dollars per pound, it’s the cheapest properly-formatted salt available. The 26-ounce container lasts dozens of batches, making it essential for anyone serious about regular fermentation. Many reviewers buy multiple containers at once to stock their pantry. Using proper salt eliminates failed batches caused by iodine interference.
Check Current Price on Amazon →Start Fermenting Today
Making sauerkraut and kimchi at home is genuinely one of the easiest and most rewarding kitchen projects. You need approximately three dollars in ingredients, one basic jar, and patience — no special skills, expensive equipment, or complicated timing. The first batch teaches you everything; subsequent ones improve as you develop intuition for your kitchen’s temperature and your taste preferences. These ferments transform into kitchen staples within weeks, delivering probiotic nutrition your gut will thank you for, at a fraction of store prices.
The only real barrier to starting is confidence. Pick one recipe, gather your supplies from the list above, and commit to checking your jar daily for a week. By day five, you’ll taste tanginess developing. By day seven, you’ll have homemade fermented vegetables that cost less than a coffee to make. Then you’ll understand why fermentation has sustained human populations for thousands of years — it’s genuinely that simple. Your next step is selecting a jar, grabbing a head of cabbage, and beginning.
Frequently Asked Questions
How do I know if my ferment is spoiled versus normal?
Normal fermentation produces white kahm yeast on the surface and cloudy brine — these are harmless. Bad fermentation shows fuzzy mold in pink, green, or black, or slimy texture and foul odor instead of sour tang. If in doubt, throw it out. Proper salt ratios and complete vegetable submersion prevent spoilage in nearly all cases.
Can I use tap water in my ferment?
Tap water containing chlorine can inhibit fermentation. If your tap water is heavily chlorinated, filter it or let it sit overnight to allow chlorine to evaporate before use. Well water and most municipal water are fine once chlorine is removed. Many fermenters avoid the issue entirely by topping off their jars with additional brine made from saved salt and water.
Why does my ferment taste too salty?
You likely used too much salt or didn’t have enough vegetable mass to brine ratio. Start with one tablespoon of salt per pound of vegetables. If your ferment is too salty, you can still eat it — rinse before serving or use it in smaller quantities mixed with fresh vegetables.
How long does fermented sauerkraut last in the refrigerator?
Properly fermented and sealed sauerkraut lasts 4-6 months refrigerated, though flavor becomes increasingly vinegary over time. As long as no mold appears and it tastes sour rather than rotten, it’s safe to eat. Many people consume theirs within 2-3 months when flavor is brightest.
Can I ferment vegetables other than cabbage?
Yes — carrots, radishes, green beans, cucumbers, and beets all ferment beautifully using the same method. However, cabbage and other brassicas are easiest for beginners because they naturally release abundant brine. Start with cabbage-based ferments, then branch out once you understand the fundamentals.
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