Bell Beaker Pots in Poland Held the Region’s Oldest Alcohol
Somewhere in north-eastern Poland, roughly 4,500 years ago, people were drinking. The vessels they used have survived. The liquid inside them has not, not exactly, but the chemistry has, trapped in the walls of clay pots that were buried and forgotten long before any written record of this part of Europe existed. A new study published in the journal Archeometry has now read those chemical traces, and what they reveal is not only the oldest known evidence of fermented alcohol in the region, but a puzzle about where the ingredients came from that opens a window onto the reach of prehistoric trade networks in central and northern Europe.
The research examined 13 ceramic vessels recovered from sites at Suprał and Skrzeszew in the Podlasie region of north-eastern Poland. All 13 were linked to the Bell Beaker culture, a prehistoric community whose distinctive pottery and burial traditions spread across much of Europe between roughly 2500 and 1800 BC. At least nine of the 13 vessels tested positive for chemical compounds associated with fermented alcoholic beverages. The second half of the third millennium BC, which is to say approximately 2500 to 2000 BC, now has its first confirmed alcohol evidence in this part of the continent.
What the Chemistry Found
The analysis detected lactic acid and acetic acid inside the vessel walls, both of which are produced during fermentation. Alongside these, researchers identified traces associated with yeast activity, bacterial processes and grain processing, the chemical fingerprints of a brewing or fermenting operation carried out millennia before any written recipe existed for it. Organic residue analysis of this kind works because certain compounds bind to the porous interior surfaces of fired clay and resist degradation over thousands of years, preserving a record of what was once held inside long after the contents themselves have disappeared.
Based on the chemical profile, the researchers believe the beverages would have resembled either an early form of beer or something closer to what specialists call Nordic grog: a fermented mixture incorporating cereals, fruit, honey and herbs. Some of the vessels also showed markers consistent with the addition of plant resins, which could have served either as a preservative to extend the drink’s shelf life or as a flavouring agent to alter its taste. The overall picture is of a drink that was deliberately crafted with multiple ingredients, not a simple single-grain ferment, suggesting both knowledge of fermentation chemistry and access to a range of raw materials.
That access raises the question that sits at the heart of the study’s wider significance. Researchers found signs pointing to the use of wheat or barley. But there is a problem: there is little archaeological evidence that cereals were cultivated in the Podlasie region at this time. The earliest confirmed traces of arable farming in the area come from later centuries. If the grain was being used to make alcohol in Podlasie around 2500 BC, it almost certainly was not being grown there. Someone had to bring it in.
A Drink That Travelled
The research team’s suggestion is that the grain arrived through trade contacts with regions where cereal cultivation was already firmly established, specifically Kujawy and Chełmno Land, areas of central and northern Poland where farming communities had been active for some centuries by this point. If correct, this means that the Bell Beaker communities of north-eastern Poland were embedded in exchange networks that connected them to agricultural producers further west, and that fermented drinks may have been one of the goods, or one of the products whose ingredients, moved along those networks.
This possibility fits neatly with what archaeologists already know about the Bell Beaker phenomenon more broadly. The culture first appeared on the Iberian Peninsula and spread across much of Europe with remarkable speed, leaving its characteristic pottery, metalwork and burial customs across a vast geographic range from Portugal to Poland and from the British Isles to the Mediterranean. Drinking vessels are among the most consistent and characteristic finds associated with Bell Beaker communities wherever they appear, and many researchers believe that shared drinking practices, including communal consumption of fermented beverages at ceremonies and gatherings, were central to the social identity of these communities and to the networks that connected them.
Finding chemical evidence for those drinks at the north-eastern edge of the Bell Beaker world, in a region where farming had not yet taken hold, suggests that the cultural practice of ceremonial drinking had outrun the local capacity to supply its own raw materials. The Podlasie communities wanted to participate in a shared cultural tradition, and they found a way to source what they needed to do so, even if that meant reaching several hundred kilometres west for grain.
Ritual, Not Routine
The context in which the vessels were found adds another dimension. Researchers believe the pottery was linked to ritual rather than everyday household use. Bell Beaker drinking vessels appear frequently in funerary contexts across Europe, placed with the dead as grave goods or used in ceremonies at burial sites. The association between fermented drink and ritual practice was deep and consistent across the Bell Beaker world, and the Podlasie finds appear to conform to that pattern. These were not jugs left on a kitchen shelf. They were objects used at moments of social and ceremonial significance, and the drinks they held carried meaning beyond simple refreshment.
The study did not end with the Bell Beaker horizon. Researchers also identified similar chemical residues in pottery from the later Trzciniec culture, which succeeded the Bell Beaker communities in the region during the Early Bronze Age. That continuity matters. It suggests that whatever the Bell Beaker communities established in terms of fermentation knowledge and drinking traditions, those practices were absorbed into or inherited by the communities that followed them, rather than disappearing with the culture that created them. The drink outlasted the drinkers.
Filling a Blank on the Map
Discoveries linked to ancient alcohol have been reported with increasing frequency across western and central Europe in recent decades, as organic residue analysis has grown more sensitive and more systematically applied to archaeological pottery. Evidence has emerged from sites in Britain, Iberia, Germany, Scandinavia and France, collectively building a picture of brewing and drinking as pan-European practices with deep prehistoric roots. North-eastern Poland has remained a gap in that map, partly because fewer sites have been subjected to organic residue analysis and partly because the region’s position at the edge of the early farming zone created different material conditions from those in areas with longer agricultural histories.
The Supraśl and Skrzeszew finds fill part of that gap. They confirm that the impulse to ferment, to craft a drink from grain and fruit and honey and resin and consume it together at moments that matter, reached the marshlands and forests of north-eastern Poland by at least 2500 BC, carried there by a culture whose pottery and its contents moved across a continent. The vessels that held those earliest drinks were eventually buried. The acids and proteins that lined their walls endured. And 4,500 years later, a laboratory reading those traces has handed back the memory of a ceremony that no one at the time thought to write down.
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