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Step-by-Step Tutorial
PRACTICAL WALKTHROUGH · PARAMETERS · COMMON MISTAKES
Chuño is a freeze‑dried potato product from the Andes, produced by freezing at sub‑freezing temperatures and sun‑drying at high altitude to drive sublimation.
Origin: Inca (Pre‑Columbian) — Andes, South America
See full technique reference →During freeze‑drying, ice in potato cells sublimates directly to vapor under low pressure, preserving native starch granules and limiting Maillard browning. The process reduces water activity below 0.3, inhibiting microbial growth while maintaining nutrient content. The low temperature also minimizes retrogradation of starch, keeping the texture crisp.
Primary Reaction
Sublimation of ice to water vapor under low pressure
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Key Variables