Germany's Purity Law of 1516 states that German beer must contain only water, hops & this germinated grain
..... Reinheitsgebot: 
The Bavarian beer purity law of 1516 that states that beer in Germany shall only... [DOC] [TLE] Hefeweizen and Dunkelweizen - All About Beer [PAR] Sep 1, 2008 ... As secular brewing operations sprouted in Germany during the second ... House 
of Wittlesbach introduced the Reinheitsgetbot Purity Law in 1516.