Lacto-fermenting green (unripe) tomato: 4.00% salt, 10.0days at 68 °F
Unripe green tomatoes only. Ripe tomatoes are too acidic + too soft to lacto-ferment cleanly — they turn to mush and risk mold. Green tomato pickling is a Russian and Eastern European preservation tradition.
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
40 g
14.08
4.69
Morton kosher
40 g
8.33
2.78
Fine sea salt
40 g
7.03
2.34
Pickling / canning
40 g
7.27
2.42
Default salt
4.00 %
Salt range
3.50% – 5.00%
Time @ 68 °F
10.0 days
Target pH
3.80
Water content
~94%
Preferred styles
brine pickle russian, torshi
Technique
Firm green tomatoes, whole or halved. 4% brine + 2 garlic cloves + dill flower heads + 1 bay leaf + 3 black peppercorns per pint. Cold ferment: 1 week at 60°F then transfer to fridge for 2 more weeks.
What percent salt for fermenting green (unripe) tomato?
4.00% by weight is the default for green (unripe) tomato (workable range 3.50%–5.00%). For 1000g green (unripe) tomato, that's 40.0g salt. Use non-iodised salt and weigh in grams — teaspoon equivalences vary by salt grain. Source: Sandor Katz — Wild Fermentation (green tomatoes).
How long to ferment green (unripe) tomato?
10.0 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 3.80 or below indicates complete primary fermentation.
What's the best technique for fermenting green (unripe) tomato?
Firm green tomatoes, whole or halved. 4% brine + 2 garlic cloves + dill flower heads + 1 bay leaf + 3 black peppercorns per pint. Cold ferment: 1 week at 60°F then transfer to fridge for 2 more weeks.
What category is green (unripe) tomato for fermentation?
Green (Unripe) Tomato is a fruit vegetable vegetable. Unripe green tomatoes only. Ripe tomatoes are too acidic + too soft to lacto-ferment cleanly — they turn to mush and risk mold. Green tomato pickling is a Russian and Eastern European preservation tra… Preferred fermentation style: brine-pickle-russian, torshi.
The kit for fermenting Green (Unripe) Tomato
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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