Scientists bake bread with Ötzi’s ancient yeast
Scientists studying the remains of Ötzi the Iceman have achieved an unexpected milestone after successfully using yeast recovered from the ancient mummy to produce sourdough bread more than 5,000 years after his death.
The discovery emerged from an ongoing investigation into the microbial life associated with Ötzi, the naturally preserved Copper Age man whose body was found in the Alps in 1991. Researchers examining samples from his skin and internal tissues identified several strains of cold-adapted yeast that appear to have survived within the mummy’s environment for thousands of years.
After isolating and cultivating the microorganisms in laboratory conditions, the research team tested whether the yeast could function in food production. Initial attempts yielded little activity, but the organisms gradually adapted to flour-based conditions and eventually produced a working sourdough starter.
The resulting dough rose successfully, demonstrating that the ancient microbes remained biologically active despite their extraordinary history. Researchers described the bread-making experiment as a surprising success and evidence of the resilience of certain microorganisms.
The study forms part of a broader effort to understand the complex ecosystem that has developed around Ötzi’s remains since his death around 3230 BCE. Scientists believe some of the yeast strains likely originated from the glacier environment where the body was preserved and became established within the mummy over centuries.
Beyond the novelty of baking bread with ancient yeast, researchers say the findings could have practical scientific value. Some of the microorganisms were found to break down phenol, a chemical used to protect Ötzi from fungal growth during preservation. This ability may have potential applications in environmental cleanup and waste treatment in the future.
The microbial analysis has also provided clues about prehistoric lifestyles. Comparisons between Ötzi’s gut microbiome and those of present-day populations living traditional lifestyles suggest similarities in diet, particularly higher consumption of fibre and whole grains than is common in many industrialised societies today.
Researchers say the findings challenge the notion of Ötzi as a static archaeological specimen. Instead, they describe the mummy as a living microbial ecosystem that continues to reveal new insights into ancient life, environmental adaptation and the long-term survival of microorganisms.
Following the success of the sourdough experiment, the team is now exploring whether the ancient yeast could also be used in brewing, opening another chapter in the scientific study of one of history’s most famous mummies.
About The Author
