This fermented cabbage and carrots recipe has been passed down in my Russian-Ukrainian family for as long as I can remember - and the science behind it explains exactly why it works.
My mom has made this dish since before I was born, and I've been lucky enough to eat it my whole life. It follows the classic Eastern European approach: a precise 1kg cabbage to 20g salt ratio, which comes out to about 2% salt by weight - the same benchmark food-science sources point to as the sweet spot for safe, crisp fermentation. My parents used crocks and a plate on top with a weight to keep cabbage under the juices and my father would pound the cabbage in the salt to get it juicy.
Whether its roots are more Russian or Ukrainian, I honestly can't say for certain given my own mixed heritage, but the technique lines up with what other Ukrainian home cooks describe as their own family traditions: shredded cabbage and grated carrot massaged with salt, packed tightly, weighted down so brine stays above the vegetables, and pierced daily to let trapped fermentation gas escape.
The Science Behind The Ratio And Technique
Keeping a weight on top ensures the brine stays above the cabbage at all times, which starves off oxygen-loving spoilage organisms and protects the batch from harmful bacteria.
Salt isn't just for flavor - it's a critical safety mechanism. It draws water out of cabbage cells via osmosis to create the brine, and the lactic acid the bacteria produce is what suppresses harmful bacteria.
I want to emphasize that salt must be measured precisely rather than ball park, and that you should never use substitutes like iodized table salt, since iodine can inhibit fermentation.
Yes, I pierce the cabbage down to the bottom of the jar (with a chopstick or a dull end of butter knife) and it isn't just tradition - it serves a real function. As lactic acid bacteria ferment the cabbage, they produce carbon dioxide that gets trapped in pockets throughout the packed mass. Most modern recipes handle this with a daily "burp" - cracking the lid to release built-up pressure - but the skewer method goes a step further: it physically releases gas trapped deep within the cabbage itself, not just in the jar's headspace, which can help keep the brine in more even contact with the vegetables and reduce the risk of cabbage being pushed above the brine line.
Fermented Cabbage and Carrots (Family Sauerkraut Recipe)
Equipment
- Kitchen scale
- large mixing bowl
- Fermentation jar (or wide-mouth glass jar, 1-1.5 quart / 1-1.5 liter)
- Light fermentation weight (a shot glass, small jam jar, or coffee cup works well)
- Wooden skewer or chopstick (for daily de-gassing)
Ingredients
Vegetables
- 2.2 lb. green cabbage, thinly sliced
- 1 medium carrot coarsely grated
Seasonings
- 20 g coarse salt pickling or kosher - see Notes for measuring by weight vs. volume
- 1 teaspoon whole black peppercorns
Instructions
- Thinly slice the cabbage and coarsely grate the carrot.
- Weigh the cabbage and carrot together, then calculate 2% of that weight in salt (20 g salt per 1 kg vegetables) to keep the ratio precise.
- Combine the cabbage, carrot, black peppercorns and salt in a large bowl and mix thoroughly by hand, massaging gently until the cabbage begins to release liquid.
- Pack the mixture tightly into your jar, pressing down firmly by hand as you go to remove air pockets and force the liquid to rise above the vegetables.
- Place a light weight, such as a shot glass or small jam jar, directly on top of the cabbage to keep it fully submerged in its own brine.
- Leave the jar at room temperature for 3 days. The cabbage should stay fully covered in liquid throughout fermentation; this is the most important visual check for food safety.
- Twice a day, pierce the cabbage in 4-5 places down to the bottom of the jar with a wooden skewer or chopstick to release trapped carbon dioxide from within the mass, not just from the surface.
- After 3 days, transfer the jar to the refrigerator. It's ready to eat immediately, and it will continue to develop a more pronounced sour flavor over the following weeks in the fridge.
Notes
How This Compares To Most Western Recipes
A three-day timeline is a faster, milder ferment by design next to the 1-to-4-week range cited by most extension and food-safety sources. My family's version is fermented faster and milder by design - a 'young' kraut with a lighter, slightly sweet tang, rather than a fully sour, long-aged one. If you prefer more tang, letting it sit longer in the fridge is a common next step.
Important Visual Cue
The cabbage should stay fully covered in its own released liquid - this is the single most important food-safety checkpoint in the whole process, since oxygen exposure at the surface is what invites mold rather than the fermentation you want. If a jar produces less juice than expected, most sources recommend topping off with a matching 2% saltwater brine rather than adjusting the salt already mixed in.
Adjusting Salt for Cabbage Size
I usually use 25 grams of salt for small cabbage, 30 grams for medium, and 35 for large one.
Family Variations: Apples, Raisins, and Onions
I often add raisins, small apple slices and cranberries before starting the fermentation process. I also like to add onions, but after the fermentation is complete.
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