Salt percentage
2.5% salt — standard hot sauce
Enough salt to balance heat and tang in the final blended sauce. After dilution with vinegar, final product tastes balanced.
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 | 25 g | 8.8 | 2.93 |
| Morton kosher | 25 g | 5.21 | 1.74 |
| Fine sea salt | 25 g | 4.39 | 1.46 |
| Pickling / canning | 25 g | 4.55 | 1.52 |
Safety and use at 2.5%
The optimal salt level for lacto-fermenting hot peppers. Capsaicin doesn't affect Lactobacillus, but pepper flesh is lower-water than cabbage, so slightly higher salt % provides safety margin against the less-forgiving medium.
Technique notes
Standard for hot sauce base. Weighed at 2.5% of total pepper weight before any added brine. If adding aromatics (garlic, onion, carrot), those also count in the weight — 2.5% of combined total.
Typical ferments at 2.5%
- lacto hot sauce
- fermented salsa
- pepper paste
Frequently asked questions
How much salt is 2.5% for fermentation?
2.5% salt = 25.0g salt per 1000g vegetables. For 500g: 12.5g salt. Multiply vegetable weight by 0.025. Use non-iodised salt and weigh in grams — teaspoon equivalences vary by salt grain type.
Is 2.5% salt safe for fermentation?
The optimal salt level for lacto-fermenting hot peppers. Capsaicin doesn't affect Lactobacillus, but pepper flesh is lower-water than cabbage, so slightly higher salt % provides safety margin against the less-forgiving medium.
What does 2.5% salt taste like?
Enough salt to balance heat and tang in the final blended sauce. After dilution with vinegar, final product tastes balanced. Standard for hot sauce base. Weighed at 2.5% of total pepper weight before any added brine. If adding aromatics (garlic, onion, carrot), those also count in the weight — 2.5% of combined total.
What ferments use 2.5% salt?
Common ferments at 2.5%: lacto hot sauce, fermented salsa, pepper paste. Compatible vegetables: 24 types — see list above for full pairings.
Vegetables at 2.5%
24 vegetables are commonly fermented at 2.5% salt. Each page gives timing at 68 °F, pH target, and species-specific technique.
- Green Cabbage — 14.0d at 68 °F · pH 3.40
- Jalapeño Pepper — 7.0d at 68 °F · pH 3.50
- Mixed Hot Peppers — 7.0d at 68 °F · pH 3.50
- Daikon Radish — 10.0d at 68 °F · pH 3.80
- Carrot — 10.0d at 68 °F · pH 3.80
- Red Beet — 10.0d at 68 °F · pH 3.80
- Garlic — 21.0d at 68 °F · pH 3.50
- Ginger Root — 7.0d at 68 °F · pH 3.80
- Yellow Onion — 10.0d at 68 °F · pH 3.80
- Turnip — 10.0d at 68 °F · pH 3.80
- Cauliflower — 10.0d at 68 °F · pH 3.80
- Bell Pepper — 7.0d at 68 °F · pH 3.80
- Celery — 7.0d at 68 °F · pH 3.80
- Brussels Sprouts — 10.0d at 68 °F · pH 3.50
- Asparagus — 5.0d at 68 °F · pH 3.60
- Mustard Greens (Gai Choy) — 10.0d at 68 °F · pH 3.40
- Kohlrabi — 10.0d at 68 °F · pH 3.50
- Red Radish — 5.0d at 68 °F · pH 3.60
- Rutabaga — 14.0d at 68 °F · pH 3.80
- Parsnip — 14.0d at 68 °F · pH 3.80
- Kale — 12.0d at 68 °F · pH 3.40
- Swiss Chard — 10.0d at 68 °F · pH 3.50
- Fennel — 10.0d at 68 °F · pH 3.60
- Leek — 10.0d at 68 °F · pH 3.60
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. Last verified 2026-09-03.
Gear for fermenting at 2.5% salt
A short, honest kit for lacto-fermentation. The scale is the one that matters most — everything here is by weight.
- Digital kitchen scale (0.1 g)Salt % is by weight, not volume — a 0.1 g scale is what makes the math above accurate.View on Amazon →
- Glass fermentation weightsKeep vegetables submerged under the brine line so they ferment safely without mould.View on Amazon →
- Airlock fermentation lidsLet CO₂ escape while keeping oxygen out — wide-mouth lids that fit standard jars.View on Amazon →
- Wide-mouth mason jarsThe workhorse vessel for kraut, kimchi and brine pickles — 1 qt and ½ gal sizes.View on Amazon →
- Pickling / fine sea saltPure salt with no iodine or anti-caking agents, which can cloud brine and inhibit fermentation.View on Amazon →
- Stoneware fermentation crockFor scaling past the jar — a water-sealed crock for 5 L+ batches with built-in weights.View on Amazon →
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