Chuño

Chuño was born out of necessity in the high Andean plateaus, where extreme temperature variations between day and night made preserving harvests difficult. The peoples of the altiplano, well before the Inca empire, learned to turn this harsh climate to their advantage by exploiting the nighttime frost and intense daytime sun to transform perishable potatoes into reserves that could be kept for several years. This technique also made it possible to render edible wild or bitter potato varieties, laden with solanine, that could not be consumed fresh without being neutralized through this prolonged treatment. Chuño thus became a pillar of the Andean subsistence economy, stored in enormous granaries called qullqas under Inca administration, used to feed armies, travelers, and populations during years of scarcity. Even today, its preparation still punctuates certain rural communities of the high plateaus, perpetuating knowledge passed down orally through generations.

• 5 kg bitter potatoes of Andean variety (luki or high-altitude varieties)
• Rainwater or water from a nearby stream for possible rinsing
• Salt (optional, for preservation or later preparation)

1. Select bitter potatoes (luki or high-altitude varieties), harvested after the first frosts, and spread them in a single layer directly on the ground in an open area of the altiplano.
2. Leave the tubers exposed to the intense nighttime frost, which bursts their cells and transforms their flesh into a frozen pulp.
3. The next day, under the intense high-altitude sun, allow the heat to begin thawing and drying, turning the potatoes for equal exposure.
4. Repeat this cycle of nighttime freezing and daytime sun exposure for five to seven days, until the pulp is thoroughly softened.
5. Press each tuber by hand or underfoot to extract as much water and bitter liquid as possible, often by trampling them on an animal hide or mat.
6. Continue sun-drying for several additional days, until obtaining a completely dehydrated, light, and shriveled potato.
7. Rub the dried tubers to remove the last skins and impurities, then store in plant fiber bags, protected from humidity.

Chuño has a light, spongy, and porous texture once rehydrated, very different from fresh potato. Its flavor is distinctive, slightly earthy and subtly fermented, with a residual bitterness characteristic of the varieties used and the transformation process. Once cooked in soups or stews, it absorbs surrounding flavors while retaining this rustic identity characteristic of the high plateaus.