:"An original variety that was cultivated 5,000 years ago is related to Traminer and Süßschwarz. This autochthonous grape variety has been documented in the Mark Brandenburg since the Middle Ages. It belonged to the core set of the old Franconian grape varieties, which have been used since the 8th century AD. imported from Moravia and has become at home in Germany's mixed batches. Their robustness and good grape ripeness, combined with a noble wine aroma, make them very valuable for local viticulture. Until 2007, this gem was considered extinct." (https://historische-rebsorten.de/rebsorte/gruener-adelfraenkisch/)