Common Questions
Do I need special fermentation equipment?
No. A clean wide-mouth jar, something to use as a weight, and a place out of direct sunlight is enough. Fancy airlock lids are nice, but not required.
What salt should I use?
Use non-iodized salt. Fine sea salt or kosher salt works well. Iodized salt and anti-caking agents can slow fermentation and may add off flavors in some batches.
How do I know it is fermenting?
Within a day or two, you will usually see small bubbles, a tangy aroma, and the cabbage will look more translucent. That is a good sign.
Is surface foam normal?
Yes. A little white foam can happen. Skim it off, keep the cabbage submerged, and carry on.
What about kahm yeast?
You might see a thin white film on top. That is usually kahm yeast. It is not dangerous, but it can taste weird. Skim it, make sure everything stays submerged, and consider switching to a loose lid or airlock for an easier ride.
What about mold?
If you see fuzzy mold (green, blue, black, or pink), that is not the vibe. When in doubt, throw it out. Keeping everything below brine is the best prevention.
How long should I ferment it?
Typical range is 5 to 14 days for a bright, crunchy kraut. If you want it funkier and more sour, it is totally normal to keep going for 2 to 4 weeks. Warmer kitchens ferment faster. Start tasting around day 5. When it hits your perfect tang, refrigerate it.