But while beer’s popularity waned in the Middle East, it was gaining ground in northern Europe. People there somehow figured out brewing (perhaps via another soggy-bread epiphany) by at least 800 B.C., based on beer residues in a Celtic amphora found in modern Bavaria. Dornbusch says the Romans were the first to invent the modern brewing process—involving malting and mashing—based on the ruins of a 179 A.D. brewery discovered in a Roman settlement near what is now Regensburg, Germany.
Link | Image: US National Archives