Juwel (grape)
Juwel is a white German wine
German wine
German wine is primarily produced in the west of Germany, along the river Rhine and its tributaries, with the oldest plantations going back to the Roman era. Approximately 60 percent of the German wine production is situated in the federal state of Rhineland-Palatinate, where 6 of the 13 regions ...

 grape variety that was produced in the mid-20th century as a crossing between Kerner
Kerner is a surname. Notable people and organizations bearing this name include:In literature:* Elizabeth Kerner, fantasy author* Justinus Kerner , a German lyric poet of the Swabian schoolIn politics:...

 and Silvaner
Sylvaner or Silvaner is a variety of white wine grape grown primarily in Alsace and Germany, where its official name is Grüner Silvaner. In Germany it is best known as a component of Liebfraumilch and production boomed in the 1970s to the detriment of quality, but it has long enjoyed a better...

. By the end of the 20th century, only around 30 hectares of the grapes were still in production, mostly found in the Rheinhessen
Rheinhessen (wine region)
Rheinhessen is the largest of 13 German wine regions for quality wines with under cultivation in 2008. Named for the traditional region of Rhenish Hesse, it lies on the left bank of the River Rhine between Worms and Bingen in the federal state of Rhineland-Palatinate...

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