HAPPY DAY OF THE BEER to all of you!!! On April 23rd, 1516 (yes, that is fifteen hundred sixteen ) the Bavarian Duke William IV and Louis X signed a law that put the Munich purity law in effect for the whole of Bavaria. Beer shall henceforth only be made with water, barley and hops. And what better beer to celebrate than a great Weihenstephaner. Mild, hoppy and made in the worlds oldest brewery. In bavaria - of course. Having its roots in 768 and its first license in 1040, those guys perfected brewing. Soo... open up a beer, and celebrate!