The Reinheitsgebot is no longer part of German law . It has been replaced by the Provisional German Beer Law , which allows things prohibited in the Reinheitsgebot , such as wheat malt and cane sugar , but which no longer allows unmalted barley . The Reinheitsgebot is no longer part of German law : it has been replaced by the Provisional German Beer Law ( VorlÃ ufiges Deutsches Biergesetz ( Provisional German Beer-law of 1993 ) ) , which allows constituent components prohibited in the Reinheitsgebot , such as wheat malt and cane sugar , but which no longer allows unmalted barley .