Silvaner

Silvaner or Sylvaner is a variety of white wine grape grown primarily in Alsace and Germany, where its official name is Grüner Silvaner. While the Alsatian versions have primarily been considered simpler wines, it was included among the varieties that can be used to produce Alsace Grand Cru wine in 2006, together with the four 'noble grapes' of Alsace, although only in one vineyard, Zotzenberg. This dichotomy is explained by the vigour of the Sylvaner vine and the grape's neutral flavour, which can lead to blandness unless yields are controlled. On the other hand, it gives a blank canvas for the expression of terroir, and on good sites with skilled winemaking, Sylvaner can produce elegant wines. It has high acidity but naturally reaches high must weights, so is often blended with other varieties such as Riesling or Elbling, and is sometimes made into a dessert wine. Sylvaner is an ancient variety that has long been grown in Central Europe. In Germany it is best known as a component of Liebfraumilch. It has long enjoyed a better reputation in Franconia than in other German wine regions. DNA fingerprinting has revealed it to be a cross between Traminer and the "hunnic" variety Österreichisch-Weiß (meaning "Austrian White"). As a result, it is now thought to have originated in Austrian Empire.

Source: Wikipedia