Boza

Boza, also bosa, is a fermented beverage originating from Central Asia and made in parts of the Balkans, Turkey, Central Asia, the Caucasus, and North Africa. It is a malt drink made by fermenting various grains: maize and wheat in Turkey. It's one of the oldest Turkic beverages.: 77 : 46  It has a thick consistency, a low alcohol content (around 1%), and a slightly acidic sweet flavor. According to Turkish etymological dictionary Nişanyan Sözlük, boza is etymologically Turkic in origin. The dictionary states that Old Turkic buχsı or buχsum are cognates, yet it is unclear from which language it was ultimately derived and which one took it as a loanword. Ármin Vámbéry says it is an ancient Turkish word found in Kutadgu Bilig. The oldest written account of the drink is under the name buχsum and is attested from the 1073 Middle Turkic dictionary Dīwān Lughāt al-Turk by Mahmud al-Kashgari. Modern Turkish word boza is believed to be cognates with the Old Turkic buχsı or buχsum. The drink under the name boza is first attested in Abu Hayyan al-Gharnati's early 14th century Kipchak Turkic work Kitab al-'idrak li-lisan al-'atrak

Source: Wikipedia