Archaeologists from the University of Zurich and elsewhere have analyzed protein residues from ancient cooking cauldrons and found that the people of Caucasus ate deer, sheep, goats, and members of the cow family during the Maykop period (3700-2900 BCE). Wilkin et al. analyzed protein residues from 5,000-year-old copper alloy cauldrons. Image credit: Arnaud 25 / CC BY-SA 4.0. Many metal alloys have antimicrobial properties, which is why the proteins...
