The Reinheitsgebot (German pronunciation: [ˈʁaɪnhaɪtsɡəboːt], literally "purity order"), sometimes called the "German Beer Purity Law" in English, is the collective name for a series of regulations limiting the ingredients in beer in Germany and the states of the former Holy Roman Empire. The best-known version of the law was adopted in Bavaria in 1516, but similar regulations predate the Bavarian order, and modern regulations also significantly differ from the 1516 Bavarian version.
The most influential predecessor of the modern Reinheitsgebot was a law first adopted in the duchy of Munich in 1487. After Bavaria was reunited, the Munich law was adopted across the entirety of Bavaria on April 23, 1516. As Germany unified, Bavaria pushed for adoption of this law on a national basis (see Broader adoption).
According to the 1516 Bavarian law, the only ingredients that could be used in the production of beer were water, barley and hops.
The 1516 Bavarian law set the price of beer (depending on the time of year and type of beer), limited the profits made by innkeepers, and made confiscation the penalty for making impure beer.
The text of the 1516 Bavarian law is as follows:
We hereby proclaim and decree, by Authority of our Province, that henceforth in the Duchy of Bavaria, in the country as well as in the cities and marketplaces, the following rules apply to the sale of beer:
From Michaelmas to Georgi, the price for one Mass [Bavarian Liter 1,069] or one Kopf [bowl-shaped container for fluids, not quite one Mass], is not to exceed one Pfennig Munich value, and
From Georgi to Michaelmas, the Mass shall not be sold for more than two Pfennig of the same value, the Kopf not more than three Heller [Heller usually one-half Pfennig].
If this not be adhered to, the punishment stated below shall be administered.
Should any person brew, or otherwise have, other beer than March beer, it is not to be sold any higher than one Pfennig per Mass.