Sumerians, who used bappir to produce it, worshipped a goddess of it named Ninkasi.
During the production of this substance, barm and trub can be eliminated by using a Burton Union setup or double dropping, respectively. John I of Brabant and John the Fearless of Burgundy are the two likely inspirations for Gambrinus, a folk hero who was the "king" of this stuff. Sumerians, who used bappir to produce it, worshipped a goddess of it named Ninkasi. Albert IV of Bavaria promulgated the Reinheitsgebot, a law restricting the production of this substance to only three ingredients. Geuze and kriek are two varieties of a Belgian type of this substance called lambic. It was originally flavored with an herb mixture called gruit prior to the widespread use of hops. For 10 points, identify this type of beverage whose varieties include stouts, lagers, and ales.
During the production of this substance, barm and trub can be eliminated by using a Burton Union setup or double dropping, respectively.
beer [accept ale or any other type of beer]