How long does Russian sauerkraut take to ferment?
Typically 3–7 days at room temperature, depending on warmth and desired sourness. Taste after 3 days and ferment longer if you prefer tangier flavor.
Can I use red cabbage instead of green?
Yes, red cabbage works and produces a deeper color and slightly earthier flavor, though traditional recipes call for green cabbage.
What type of salt should I use?
Use non-iodized salt (sea salt or pickling salt). Iodized salt can cloud the brine and affect fermentation.
How do I know if my sauerkraut went bad?
Properly fermented sauerkraut should smell sour and tangy. Discard if it smells rotten, moldy, or develops pink/orange surface growth.
Can I adjust the salt amount?
Use 2–3% salt by weight of cabbage for safe fermentation. Too little risks spoilage; too much slows fermentation.