The Winegrowers' Association in the German Rheingau was founded in 1984 by Bernhard Breuer (1947-2004) with the aim of protecting the classic Rheingau Riesling. At last about 50 wineries were members. In the course of time, there was an increasing overlap with the VDP Rheingau in membership and objectives, as a result of which the Charta Rheingau was incorporated there in March 1999. The Charta wines, however, are still produced by some wineries according to almost the same specifications. The dry to semi-dry aged wines must be made from 100% Riesling from the best Rheingau sites. Within the four-level VDP quality pyramid, this corresponds to the first vineyard or Great vineyard. Confusingly, however, the location may not be stated on the front label, but only on the back label. Compared to the legal requirements, the wines must have a must weight eight °Oe higher.