Bavaria’s Duke William IV, on April 23,…

Bavaria’s Duke William IV, on April 23, 1516, before a committee consisting of gentry and knights in Ingolstadt, issues his famous purity regulation for the brewing of Bavarian Beer, stating that only barley, hops, and water could be used.

This regulation will remain in force until it is abolished as a binding obligation in 1986 by Paneuropean regulations of the European Union.