Salt percentage
1.5% salt — minimum safe
Distinctly salty but not dominant. Vegetable flavor forward. Faster ferment than higher %.
Salt calculator
Enter your vegetable weight and a salt percentage. We return the exact salt mass in grams, plus teaspoons for each common grain.
Grain matters: one teaspoon of Diamond Crystal weighs half as much as one teaspoon of fine sea salt. Weigh in grams when you can.
All salt grains
| Grain | Grams | Teaspoons | Tablespoons |
|---|---|---|---|
| Diamond Crystal kosher | 15 g | 5.28 | 1.76 |
| Morton kosher | 15 g | 3.13 | 1.04 |
| Fine sea salt | 15 g | 2.64 | 0.88 |
| Pickling / canning | 15 g | 2.73 | 0.91 |
Safety and use at 1.5%
1.5% is the absolute floor for lacto-fermentation at cool temperatures (<65°F) with clean equipment. NCHFP and FDA both recommend 2.0% as the baseline for home ferments to provide a safety margin against Listeria, E. coli, and Salmonella. At 1.5% and <65°F, Lactobacillus still dominates IF starting bacteria load is normal; at 1.5% and >75°F, pathogen risk rises. Avoid 1.5% for brine-pickles (cucumbers).
Technique notes
Only for experienced fermenters who can control temperature and inspect daily. Not a beginner salt level — the safety margin is too thin. If testing, start at 2% and only reduce after 5+ successful 2% ferments.
Typical ferments at 1.5%
- short ferment sauerkraut cold fridge
Vegetables at 1.5%
2 vegetables are commonly fermented at 1.5% salt. Each page gives timing at 68 °F, pH target, and species-specific technique.
- Green Cabbage — 14.0d at 68 °F · pH 3.40
- Garlic — 21.0d at 68 °F · pH 3.50
Sources
Salt percentage guidance from the National Center for Home Food Preservation (NCHFP), FDA fermented vegetable guidelines, and Sandor Katz, The Art of Fermentation (Chelsea Green, 2012). Information is provided for educational purposes. Consult your local food safety authority for commercial production.