http://www.deutscheweine.de/icc/Internet-DE/med/1a6/1a64f607-a3e5-5117-3d28-952196117f51,11111111-1111-1111-1111-111111111111.pdf German Wine Institute: German Wine Statistics 2007-2008] In 2000, before the variety's general release, there existed only 2 hectares of experimental plantations.