Use the correct salt concentration for safe fermentation

Use 2-3% salt by weight of the total contents (vegetables plus water for brines). Too little salt allows harmful bacteria to compete with beneficial ones. Too much salt slows fermentation and makes the product overly salty. A kitchen scale is the most reliable way to measure.

Why It Works

Salt selectively suppresses harmful organisms while Lactobacillus bacteria are salt-tolerant. The 2-3% range has been used safely for thousands of years across cultures. It creates the ideal conditions for safe, consistent fermentation.

Tips

• For a simple brine: 1 tbsp salt per 2 cups water is approximately 3%
• Use non-iodized salt (sea salt, kosher, pickling salt) — iodine inhibits beneficial bacteria
• A $10-15 kitchen scale makes salt measurement precise and repeatable
• If you taste your ferment and it seems off, add a bit more salt and wait another day before discarding