The stew is cooked in a pot first, then a red-hot volcanic stone is dropped into each serving so the broth hisses and bubbles again at the table.
Calapurca is a thick, spicy Andean stew of llama, lamb, or beef with potatoes, mote corn, and chuño (freeze-dried potato), served bubbling from the heat of a hot stone dropped inside it. It is cooked for festivals and gatherings in the Andean villages of Arica y Parinacota and sold at some markets in Arica.