Archaeologists Uncover 500-Year-Old Freeze-Dried Potatoes at Inca Site in Peru

Archaeologists have discovered remarkably well-preserved freeze-dried potatoes, known as "chuño," dating back approximately 500 years at the Tambo Viejo archaeological site in southwestern Peru. This site, located in the Acarí Valley, was a significant administrative center during the Inca Empire. The findings, published in the Journal of Field Archaeology, reveal how the Incas preserved, stored, and transported large quantities of food to sustain thousands of workers who built the empire's infrastructure.

The potatoes retained their original shape and brown color, described by researchers as being in "excellent" condition. Led by Professor Lidio Valdez from the University of Calgary, the excavation showed that the ancient chuño closely resembles modern potatoes, except they are smaller due to shrinkage from drying and environmental conditions. Valdez emphasized that the potatoes' advanced age is not apparent from their external appearance.

The discovery highlights the Incas' sophisticated freeze-drying technique, which could only be performed at high altitudes in the Andes. After production, these potatoes were stored in state-controlled warehouses, mostly located at elevated sites, and transported via llama caravans to feed thousands of laborers involved in major projects such as palace and road construction, including Machu Picchu.

At Tambo Viejo, the potatoes were stored underground in ceramic containers to prevent spoilage, a critical measure given the high moisture content of potatoes and the risk of decay in humid environments. This freeze-drying method proved highly effective for long-term preservation and was essential to the empire's food supply system.

This finding adds to recent archaeological discoveries about ancient food preservation worldwide, including preserved fruits and beans in Pompeii, Italy, and a 2,000-year-old burnt Roman bread loaf found in Windisch, Switzerland.

Summary: Archaeologists in Peru unearthed 500-year-old freeze-dried potatoes at an Inca site, demonstrating the empire's advanced food preservation and distribution methods that supported large-scale construction projects.

Points: - Archaeologists found 500-year-old freeze-dried potatoes (chuño) at Tambo Viejo in Peru. - The potatoes are exceptionally well-preserved, resembling modern potatoes but smaller. - Chuño was freeze-dried at high Andean altitudes and stored in state warehouses. - Large quantities were transported by llama caravans to feed thousands of Inca workers. - The discovery sheds light on Inca food preservation and logistics for empire-building. - This finding complements other recent ancient food preservation discoveries worldwide.

Entities: {"people":["Lidio Valdez"],"organizations":["University of Calgary","Journal of Field Archaeology"],"places":["Tambo Viejo","Acarí Valley","Peru","Andes","Machu Picchu","Pompeii","Italy","Windisch","Switzerland"]}