Two lumps of freeze-dried potatoes found in a roughly 500-year-old Inca storage room in Peru turned out to be chuño, a preservation staple so fragile that it is almost never recovered. The new study, published May 1 in the Journal of Field Archaeology, says this is only the second time chuño has been recovered from an Inca site, and it is concrete evidence that the empire moved one of its most important food sources hundreds of miles, down from the Andes toward the Pacific coast.

This is not just a curiosity for archaeology nerds. It is a real-time lesson in supply chain design, and it lands in the most uncomfortable part of modern business thinking: food security. The chuño did not survive because it was trendy. It survived because the Inca used a repeatable, high-constraint method to turn perishable potatoes into a lightweight, long-lasting food that could be stored for decades. Chuño is made by repeatedly exposing potatoes to nighttime frost and daytime sun until nearly all their moisture evaporates, leaving a vegetable that can be kept far longer than raw potatoes. According to the study’s investigators, those constraints matter because chuño can only be made at high elevations where hard frost occurs regularly.

That means the potatoes at Tambo Viejo, on Peru’s arid south coast, were not local. The samples “must have traveled down from the highlands,” most likely via llama caravan along the Inca road network, as study lead Lidio Valdez said. Valdez is an adjunct professor in the Department of Anthropology and Archaeology at the University of Calgary. He explained that chuño’s low weight probably made transportation easier, since you are moving food that has been stripped of water and turned into something closer to shelf-stable provisions.

There is a second clue embedded in the storage room, and it helps confirm the context. The chuño samples were found alongside an Inca pottery fragment and a broken spindle whorl, a tool used to spin fibers such as raw wool into yarn or thread. The discovery happened during the 2024 field season at Tambo Viejo, an Inca provincial center in the Acarí Valley, where an archaeological team had worked for several years. Inside a small storage room, they uncovered a clay pot sunk into the dirt floor, with the top half long gone; when researchers scooped soil out of the broken pot, they reached its bottom and found “the two samples of freeze-dried potatoes.” Valdez also said the team identified chuño immediately when he saw them.

For anyone trying to translate this into how organizations move essential inputs, the mechanism is the point. Potatoes are roughly 80% water and typically rot within a week at lower, warmer elevations, which makes them a poor choice for long-distance storage. Freeze-drying, as described in the study, was likely discovered before the Inca rose to power in the 15th century, perhaps when frost accidentally hit high-elevation potatoes and people noticed the dried, still-edible result. The empire then scaled the idea, using the same drying logic for other foods: Valdez said the Inca preserved meat using a similar approach, producing a product called “charki,” the source of the English word “jerky.” In other words, this was not one clever dinner hack. It was a system for surviving in places where nature refuses to cooperate.

The find also connects to why the Acarí Valley is such fertile ground for rare organic discoveries. The two freeze-dried potatoes survived thanks to extremely dry conditions, which help preserve organic remains that would otherwise decay. Those same conditions have previously yielded naturally mummified guinea pigs (Cavia porcellus) in Valdez’s earlier work at the site. That is a reminder that even the best “process” depends on the environment not actively destroying the evidence. In today’s terms, it is like relying on quality control in a warehouse and still having to win a battle against humidity, temperature swings, and time.

Finally, the study team frames the broader relevance directly. Valdez said, “We still have so much to learn from the people of the past,” and he added that food security is a main concern even now, even though people waste food, perhaps more than at any time in human history. For executives, board members, and anyone responsible for operational continuity, the strategic stakes are simple: you do not get to choose whether shocks arrive, but you can choose whether your inputs are perishable or prepared. The Inca chuño system shows what happens when an empire turns a fragile resource into durable inventory using a method that fits the geography it depends on.

And because this was only the second recovery of chuño at an Inca site, the story is not “case closed.” Valdez expects more evidence of chuño and the long supply lines that carried it to surface as archaeologists keep digging, especially in coastal areas where relatively few Inca sites have been systematically excavated. In other words, the supply chain map is still being redrawn. Just like in modern business, the hidden routes and processes are often invisible until the next find forces the org chart to change.