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Step-by-Step Tutorial
PRACTICAL WALKTHROUGH · PARAMETERS · COMMON MISTAKES
Chuño is produced by natural freeze‑drying of potatoes at high altitude, where nightly sub‑zero temperatures form ice crystals that later sublimate during daytime sun exposure, drastically reducing moisture and concentrating sugars.
Origin: pre‑Inca Andean societies (c. 2000 BP) — Peru and Bolivia
See full technique reference →During the freeze‑dry cycle, intracellular water crystallizes, rupturing cell membranes and concentrating soluble sugars from starch hydrolysis. The resulting high sugar content imparts a characteristic sweet flavor and inhibits microbial growth. The process relies on physical disruption of cell structures and biochemical conversion of starch into glucose and fructose.
Primary Reaction
sublimation of ice (freeze‑drying)
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