Food & Cooking
Fermentation Time
How long to wait for kraut, kimchi, hot sauce, or kombucha — adjusted for your room temperature.
Fermentation Time
Inputs
Cooler rooms take longer; warmer rooms move fast and can over-ferment.
Results
Estimated time
14.0 days
Ready by
Fri, May 1
Flavor checkpoint
Taste at day 7 — tangy but still crunchy means well on its way.
How to use this
Lacto-fermentation is temperature-driven. The 70°F baseline is what most home kitchens hover at; basements and garages run colder, and a sunny counter in summer runs hotter. Taste is the real finish line — these numbers are just a time window to start checking.
Once it tastes right, move the jar to the fridge. Cold storage does not stop fermentation, but it slows it to a crawl.
Formula
days = base_days × factor
factor= 0.8^((T − 70)/5) if T ≥ 70; 1.25^((70 − T)/5) if T < 70
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Formula
days = base × factor; factor = 0.8^((T−70)/5) above 70°F, 1.25^((70−T)/5) below