Müller-Thurgau is a white grape variety, which today is often referred to as Rivaner. In 1882 it was created by Hermann Müller, from the Swiss Canton of Thurgau, in the Geisenheim Grape Breeding Institute in the Rheingau region.

Due to its low acidity, Müller-Thurgau is a mild but nevertheless very fruity variety.
When vinified dry and semi-dry the variety is often referred to as „Rivaner“ today, according to the initially assumed vines of origin, Riesling and Sylvaner.

The vine is vigourous and prefers soils that are deep, fresh and not to dry.

In 1998, at the Austrian Institute for Viticulture and Pomology Klosterneuburg, it could be determined with genetic diagnostic methods (using specific microsatellites) that Sylvaner was not a crossing partner. The result indicated Chasselas as possible crossing partner (paternal candidate). A few years ago researcher of the Federal German Institute for Plant Breeding Research in Siebeldingen/Palatinate were able to further determine with new, advanced genetic diagnostic possibilities the origin of the Müller-Thurgau vine. The grape variety Madeleine Royale was defined as paternal part. Madeleine Royale is known to be a Chasselas seedling.