Lacto-fermenting jalapeño pepper: 2.50% salt, 7.0days at 68 °F
Workhorse for lacto-fermented hot sauce. Medium heat (2500-8000 SHU). Capsaicin is not water-soluble and doesn't inhibit Lactobacillus at dietary levels — fermentation proceeds normally regardless of pepper heat.
Salt calculator
Enter your vegetable weight and a salt percentage. We return the exact salt mass in grams, plus teaspoons for each common grain.
grams
%
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
Default salt
2.50 %
Salt range
2.00% – 3.50%
Time @ 68 °F
7.0 days
Target pH
3.50
Water content
~92%
Preferred styles
lacto hot sauce, fermented escabeche
Technique
Remove stems (keep seeds for heat). Puree or chop coarse. Weigh, salt at 2.5%. Pack in jar, cover with brine if not self-brining. Ferment 7-14 days. Blend smooth with vinegar (to adjust to final pH 3.0-3.5), strain, bottle. Refrigerate 6+ months.
2.50% by weight is the default for jalapeño pepper (workable range 2.00%–3.50%). For 1000g jalapeño pepper, that's 25.0g salt. Use non-iodised salt and weigh in grams — teaspoon equivalences vary by salt grain. Source: NCHFP — Hot Sauce Fermentation.
How long to ferment jalapeño pepper?
7.0 days at 68°F (20°C). Cooler kitchens (60-65°F) slow fermentation; warmer kitchens (75-80°F) roughly halve the time per 10°F increase. Start tasting from day 5; target pH 3.50 or below indicates complete primary fermentation.
What's the best technique for fermenting jalapeño pepper?
Remove stems (keep seeds for heat). Puree or chop coarse. Weigh, salt at 2.5%. Pack in jar, cover with brine if not self-brining. Ferment 7-14 days. Blend smooth with vinegar (to adjust to final pH 3.0-3.5), strain, bottle. Refrigerate 6+ months.
What category is jalapeño pepper for fermentation?
Jalapeño Pepper is a pepper vegetable. Workhorse for lacto-fermented hot sauce. Medium heat (2500-8000 SHU). Capsaicin is not water-soluble and doesn't inhibit Lactobacillus at dietary levels — fermentation proceeds normally regardless of … Preferred fermentation style: lacto-hot-sauce, fermented-escabeche.
The kit for fermenting Jalapeño Pepper
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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