The earliest traces of wine-growing in Italy appear now to date to around 4000BC, after the discovery in 2017 of large, unglazed pottery jars in located in caves in Monte Kronio, in the province of Agrigento, south-western Sicily. If confirmed the find, which was published in Microchemical Journal, means wine-growing in Italy dates to the Copper Age, rather than to the Middle Bronze Age (1300-1100 BC) as previously believed. The goal of the researchers, who were led by David Tanasi, had been to shed new light on the use of certain ceramic shapes and infer some hypothesis about ancient dietary habits, by analysing organic residues adhering to the surface or absorbed into the porous fabric of an unglazed cooking vessels. They appear to have made the earliest discovery of wine residue in the entire prehistory of the Italian peninsula. Whether the wine in question was red or white is still being researched.