Andes

Maize dough sourdough starter is a spontaneous lactic‑acid and yeast fermentation that leavens and preserves maize‑based foods.

A mildly alcoholic, sour maize-based beverage fermented by lactic acid bacteria and yeast.

Bolivian charque is a traditional sun‑drying method for llama meat that reduces water activity to inhibit microbial growth.

Earth‑oven (huatia) cooking of potatoes is a low‑tech thermal method that uses an insulated earth pit to slowly raise core temperatures to 95–105 °C over 1.5–3 h.

Stone‑boiling uses heated stones to transfer heat to liquid, inducing boiling without direct flame contact.

Maize endosperm restructuring through husk-steamed alkaline gelation.

Solar drying of Andean tubers reduces moisture and water activity to preserve starch while inhibiting microbes.

Pachamanca pit cooking is a traditional Andean earth‑oven technique that slowly cooks meats, tubers, and maize in a stone‑lined pit, producing a tender, smoky, and umami‑rich dish.

Fermented maize dough is preserved through lactic acid fermentation by bacteria and yeasts.

Slow roasting transforms guinea pig collagen into gelatin while creating Maillard crust.

Cacao bean fermentation followed by stone grinding transforms raw beans into flavor precursors and a paste suitable for chocolate production.