Pachamanca — from the Quechua pacha (earth) and manka (pot) — is the Andean earth oven preparation: heated volcanic rocks lined in a pit, food (marinated meats, potatoes, corn, beans, herbs) layered on top, covered with moist earth and grass for 2–3 hours. The technique achieves simultaneously the effects of steaming (from the heated rocks and moisture), roasting (from the radiant heat of the rocks), and smoking (from the herbs and grass as they slowly combust). No single modern cooking method replicates this combination.
- **The rocks:** Volcanic rocks specifically — they retain heat without cracking or introducing off-flavours. River stones crack when heated to the necessary temperature. [VERIFY] Acurio's rock specification. - **The heating:** Rocks heated in a fire for 2–3 hours until red-hot. - **The layering:** Rocks first, then a layer of herbs (huacatay — Peruvian black mint, chincho), then meats (marinated lamb, pork, guinea pig — in that order of density), then potato (which cook fastest), then corn, then more herbs. - **The sealing:** Moist grass, wet cloth, then earth — the seal must be complete to trap the steam. - **The timing:** 2–3 hours depending on quantity and rock temperature — the pachamanca master reads the steam escaping from the edges for doneness.
Peru