Beer myths examined
Has the Reinheitsgebot protected German beer unchanged since 1516?
“German beer has been made under the same purity law since 1516, the world’s oldest food regulation, guaranteeing that beer contains only water, barley, hops and yeast.”
A Bavarian ordinance of 1516 did restrict ingredients, but it applied to one duchy, listed three ingredients rather than four, was as much about prices and bread grain as about quality, and has been repeatedly replaced. The modern German rules are twentieth-century law with a sixteenth-century marketing story attached.
What the 1516 ordinance actually did
The text issued at Ingolstadt restricted beer to barley, hops and water, and it also fixed maximum prices. Two of its purposes were economic rather than qualitative: reserving wheat and rye for bread, which mattered enormously in a bad harvest, and controlling what beer could be sold for. Ingredient restriction and price control sat in the same document because they were the same kind of measure.
Yeast is absent from the list, and the usual explanation — that nobody knew about it — is not quite right either. Brewers used yeast deliberately and had done for centuries; what they lacked was an understanding of what it was. It was added to the permitted list much later, once the law was rewritten by people who did know.
It was Bavarian, not German
There was no Germany in 1516. The ordinance applied to the Duchy of Bavaria, and other German-speaking territories brewed under quite different rules — with wheat, with herbs, with whatever local law allowed. Bavaria pushed for its rules to be extended as a condition of joining the German Empire in the nineteenth century, which is a political history rather than a continuous legal one.
And it has been replaced repeatedly
The 1516 ordinance was superseded by later Bavarian law, then by imperial law, then by the twentieth-century Biersteuergesetz, and the current framework is the Vorläufiges Biergesetz. These are different laws with different provisions — including, importantly, different rules for top- and bottom-fermented beer, so wheat beer is legal in Germany and always has been under the modern rules.
The European Court of Justice ruled in 1987 that Germany could not use the rules to block imports of beer made lawfully elsewhere, which established that this is a national production standard rather than a definition of beer.
What to keep
The 1516 ordinance is real, is remarkably early for a food regulation, and did shape Bavarian brewing for centuries in ways still visible. German brewing genuinely has an unusually strong ingredient-restriction tradition. The corrections are to "German", to "unchanged", and to the number of ingredients — not to the existence or significance of the law.
Every myth page here has to answer this. A correction that leaves a reader with less than they arrived with is not an improvement, and the salvageable part is usually the better story.
Where the story comes from
Substantially a marketing construction. The unbroken-500-year framing was promoted by the German brewing industry in the twentieth century, and the name "Reinheitsgebot" itself is a much later coinage than the ordinance it describes.
Why it persists
It is a genuinely good story, it is printed on a great many bottles, and it flatters both brewer and drinker. It also contains enough truth to survive casual checking: there really was a 1516 ordinance, and it really did restrict ingredients.
Questions
Is the Reinheitsgebot still law?
Not the 1516 ordinance. German brewing operates under the modern Vorläufiges Biergesetz, which descends from that tradition but is twentieth-century law with different provisions — including separate rules for top-fermented beer, which is why German wheat beer is legal. The European Court of Justice ruled in 1987 that the rules could not be used to block beer lawfully made elsewhere in the EU.
Why is yeast not in the 1516 law?
Because its role was not understood, though brewers had been using it deliberately for centuries by saving it between batches. The ordinance lists barley, hops and water. Yeast was added when the law was rewritten by people who knew what it did.
Connected
What this is about: Reinheitsgebot · Germany
The record: The Bavarian purity ordinance · The European Court rules on the German purity requirements
In context: Lager and the conquest of cold
Last reviewed 2026-08-29.