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Fermented Red Cabbage.

Fermented Red Cabbage

Julia
This small-batch fermented red cabbage is crunchy, tangy, and packed with gut-friendly probiotics—no vinegar or fancy tools needed!
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Prep Time 15 minutes
Fermenting 5 days
Total Time 5 days 15 minutes
Course Side Dish
Servings 15 servings per jar

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INGREDIENTS
  

  • half of red cabbage head, about 600g, shredded finely
  • 1 tablespoon salt
  • 4 cups water + 1 tablespoon salt
  • 32 ounce mason jars
  • optional add-ons of choice, peppercorns, garlic, ginger,bay leaves, caraway seeds, mustard seeds

INSTRUCTIONS
 

  • Prep the cabbage: Remove the outer leaves from the red cabbage and cut it in half. Set one half aside for another recipe (or double this batch!). Slice the other half into quarters, cut out the core, and finely shred using a sharp knife or mandoline. Thin slices help everything ferment more evenly.
  • Massage with salt: Place the shredded cabbage into a large bowl. Sprinkle with fine sea salt (about 1 tablespoon per pound of cabbage) and massage it with clean hands for a few minutes until it softens. Then, let it rest for 10–15 minutes. You’ll start seeing some liquid pooling at the bottom—this is your natural brine!
  • OPTIONAL step. Add spices: Toss in any whole spices you’re using like caraway seeds, mustard seeds, or black pepper. Keep bay leaves whole and set them aside to add directly to the jar—this helps prevent too much bitterness.
  • Pack the jar: Scoop the cabbage into a clean mason jar, packing it down firmly with a tamper or wooden spoon as you go. You want to press out air bubbles and encourage the liquid to rise. Keep packing until the jar is nearly full, but leave 1–2 inches of space at the top.
  • Top it off: If the cabbage isn’t fully submerged in its own juices, add a bit of 2% brine (1 tablespoon salt dissolved in 4 cups non-chlorinated water). You can wedge in a piece of the cabbage core or use a glass weight to keep the cabbage under the liquid.
  • Cover: Use a fermentation lid or cover the jar with a clean cloth and secure it with a rubber band. Place the jar on a small plate or dish in case it bubbles over.
  • Ferment: Let your jar sit at room temperature (out of direct sunlight) for at least 5-7 days. Check it daily to make sure the cabbage stays submerged. You can “burp” the jar by gently opening the lid to release gas if needed.
  • Taste and store: After a week, give your cabbage a taste. If you like it more tangy, let it go another few days or even 2 weeks total. Once it tastes just right, remove the weight and bay leaves, seal with a regular lid, and transfer the jar to the fridge.

NOTES

  • How do I know if my red cabbage is fermenting?
    You’ll see bubbles, smell a tangy aroma, and notice the cabbage softening over time.
  • What if I see mold?
    If it’s fuzzy and colorful, discard it. If it’s just white film (kahm yeast), scrape it off and keep going.
  • Can I use green cabbage instead?
    Yes! The method is the same, but I recommend checking my other post for this.
  • How salty should it be?
    At first it’ll taste a bit salty, but this mellows out as it ferments.
  • Do I need a fermentation weight?
    No, but it helps! You can also wedge in a cabbage core or use a clean rock in a bag.

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