On the occasion of the 500th anniversary of the Bavarian "Reinheitsgebot", the 1000th article of the online encyclopaedia gives comprehensive information about the regulations on brewing and serving beer decided in 1516. These regulations are applicable to the present day to all top-fermented and bottom-fermented types of beer brewed in Bavaria. Not only are the readers provided with academically substantiated information about the development of the purity law and the further development up to the present, but also learn how the "Bierbeschau", the inspection and quality control, worked and which earlier purity regulations there are.
The Historisches Lexikon Bayerns is an encyclopaedia on Bavarian history published exclusively online. In June 2016, the online encyclopaedia celebrated its 10th anniversary.