one of my students brought me chuño. Chuño is a common found food in southern Peru and Bolivia.
It is essentially freeze dried potatoes.The process takes about 5 days, including several days of drying in the sun and then freezing at night. In between these times the potatoes are rolled under the bare feet of those preparing them in order to remove the skin and squish out the moisture. For more information and instructions on preparing your own Chuño, click here