As a longtime vegan, I'm used to looking up Barnivore. (Yay Barnivore! \o/) However, a (non-vegan) German friend of mine recently told me that **all** beers in Germany are vegan. When I pushed her on it, she gave me a link to [this Wikipedia article](https://de.wikipedia.org/wiki/Reinheitsgebot) It talks about German "Purity Law", stating only a very limited set of ingredients are allowed, and that there are bodies that supervise this to ensure that standards are met. I know that clarifiers are a concern here. Does this Purity Law extend to process thereby making every German Beer vegan? What exceptions should I look out for when drinking beer in Germany? Do the same laws apply to German beers produced for export?