Only beer conforming to the Reinheitsgebot, at a minimum of 13.5% Stammwürze (approximately 6% alcohol by volume) may be served at Oktoberfest. The beer must also be brewed within the city limits of Munich. Beers meeting these criteria may be designated Oktoberfest Beer.
The breweries that can produce Oktoberfest Beer under the criteria are:
- Augustiner-Bräu
- Hacker-Pschorr-Bräu
- Löwenbräu
- Paulaner
- Spatenbräu
- Staatliches Hofbräu-München
Oktoberfest Beer is a registered Trademark by the Club of Munich Brewers.

