The German Reinheitsgebot.
On April 23 1516 in the city of Ingolstadt in the duchy of Bavaria Duke Wilhelm IV and Duke Ludwig X of Bavaria publish a new law that contains regulations about the price and the ingredients of beer. These Regulations later are called the '( German Beer Purity Law which states that the only ingredients that could be used in the production of beer are water barley and hops. The law was introduced at a meeting of an assembly of the Estates of Bavaria at Ingolstadt about 60 miles north of Munich Next to the listed ingredients, the original law set the price of beer at one Pfennig per Maß. On this day however, the law is not longer active and was replaced by the Provisional German Beer Law, introduced in 1993 With the new law, some changes, which allowed the ingredients yeast wheat malt and cane sugar were introduced. Back in the Medieval era many brewers had used many problematic ingredients to preserve beers including soot and fly agaric mushrooms. When the Reinheitsgebot came into effect, several penalties for not following the law were set, for instance, the confiscation of all questionable barrels is assumed to have occurred quite often. It is also believed that the Reinheitsgebot was introduced for economic reasons. The prevention of price competition with bakers for wheat and rye was intended in order to guarantee affordable bread. The Reinheitsgebot started to spread very slowly across Bavaria and later Germany Bavaria insisted on its application throughout Germany as a precondition of German unification in 1871 to prevent competition from beers brewed elsewhere with a wider range of ingredients. Many brewers opposed the new law and they claimed that the Reinheitsgebot would lead to the extinction of many brewing traditions and local beer specialties, for instance the North German spiced beer and cherry beer were affected. In 1988 the law changed again and from then on, any ingredient that was allowed in other foods was not allowed in beer as well. However, these changes only applied to imported beers and beer brewed in Germany still has to abide to the law. On this day, many German breweries claim to follow the original Reinheitsgebot even though this is often false. At yovisto, you may be interested in a video lecture titled 'The Bitter, Twisted Truth of Hop'