Bikepure GP

Would the beer be pure? as in no impurities or alcohol or any of that nonsense, might as well call it water!!!!!>:( and that is useful because........???
Would the beer be pure?
Well it complies with the Vorläufiges Deutsches Biergesetz, so it's pretty pure, but sadly doesn't comply with the Reinheitsgebot, so the purer of the purists may be a little upset