Ancient Yeast Revived: Scientists Craft Sourdough from 5,000-Year-Old Mummy Remains

Researchers have successfully baked sourdough using yeast extracted from a 5,000-year-old mummy, potentially paving the way for historically inspired brewing experiments.

The yeast was isolated from Ötzi the Iceman, a remarkably preserved individual frozen in the Alps until his 1991 discovery. Analysis of his remains has revealed diverse microbial life, including ancient yeast strains now being tested for viability in modern fermentation processes.

Led by microbiologist Mohamed Sarhan of Eurac Research’s Institute for Mummy Studies, the team cultivated the yeast into a functional sourdough culture. Initial trials produced riseable dough within 24 hours, though Sarhan acknowledged room for refinement given his lack of prior baking experience.

Future goals include collaborating with food scientists to explore applications beyond bread, such as beer production, with consultations already underway with German brewing experts at Weihenstephan.

Genetic studies suggest the yeast entered Ötzi’s system shortly after death, likely under cold-preservation conditions that allowed its survival for millennia.

Ötzi’s significance extends beyond microbiology; his 61 tattoos and mysterious alpine death have captivated researchers studying prehistoric societal practices and environmental conditions of the era.

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