The Incas faced problems with having to take long journeys and having a food productthat would travel well and sustain them for a long time. Chuno is an Inca discovery which is still a part of the culture of the population that inhabit the area surrounding the Andes. It is essentially freeze-dried potatoes that can be stored for years. The process is simple. Potatoes are sun-dried and then frozen at night and then stomped on to remove the water and skin. Inhabitants of both Peru and Bolivia lean on Chuno, which can last for decades. When there is a long lasting drought and there is little in the way of vegetables and meat to survive this is what they lean on. Many who have tried it say it is bad-tasting and foul smelling. However, it is abundant in carbohydrates while being high in iron and calcium making it a necessity for energy, strength and strong bones when little else is available.