Fermented cereal flour (generally millet) drinks have been produced by native Anatolians and Mesopotamians since the 9th or 8th millennia BC, and Xenophon mentioned in the 4th century BC how the locals preserved and cooled the preparations in earthen pots that were buried [REF].
In the 17th century, Sultan Mehmed IV (1648-1687) prohibited alcoholic drinks including boza, and closed down all the boza shops.