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Step-by-Step Tutorial
PRACTICAL WALKTHROUGH · PARAMETERS · COMMON MISTAKES
Guava jam fermentation is a low‑heat, biologically driven preservation method used by Indigenous peoples of the Amazon.
Origin: Indigenous peoples of the Amazon (Traditional Indigenous practices) — Amazon Basin, South America
See full technique reference →During fermentation, native lactic acid bacteria convert the fruit’s fructose and glucose into lactic acid, while yeasts produce ethanol and CO₂. The combined acidification lowers the pH to 3.5–4.0 within 48–72 hours at 20–25 °C, creating a tangy, shelf‑stable spread that suppresses pathogenic microbes.
Primary Reaction
Fermentation of fructose and glucose to lactic acid (by LAB) and ethanol (by yeasts)
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