Dornfelder. It takes some digging, but there are certainly some very interesting wines made from unusual grapes in Germany.
Scheurebe (pronounced "shoy ray beh") is one of those grapes. The Germans, more so than any other European wine producing nation, are crazy about crossings. There are several different viticultural institutions in Germany (most notably in Geisenheim) where a lot of research was being done (and is still being done) to develop grape varieties that could withstand the extremes of the German climate. Germany is at the very northern edge of where quality wine can be produced, so they figured they'd help nature out a bit and try to develop grapes with higher tolerances for the climatic conditions in their country (their other aim, which isn't touted so much, was to create grapes with very high yields, and they were very successful on that count).
In that spirit, in 1916, while director at one of the grape breeding institutes in Germany, Georg Sheu created Sheurebe by crossing Riesling with what is thought to be an unknown wild vine. Many texts print that the Scheurebe crossing is Silvaner x Riesling, but genetic testing has shown that Silvaner is not related to Sheurebe at all. The confusion likely comes from the fact that Scheu was purported to have been attempting to create a grape much like Silvaner but with more forceful, characterful aromatics and greater hardiness. Sheurebe was never heavily planted in Germany and current plantings occupy less than 2% of the vineyard area and are falling.
here...the short explanation is that QbA is similar to Vin de Pays in France or IGT in Italy) bottling by Paul Anheuser from Kreuznach in the Nahe region of Germany. The vintage was 2008 and it cost about $10 from my friends at Curtis Liquors. In the glass, the wine was a light silvery lemon color. The nose was very expressive with grapefruit, pear and some lemon citrus. The wine was medium sweet (it clocks in at 9.5% alcohol) with medium acidity with loads and loads of grapefruit flavors with some rindy, pithy citrus and honey notes. It lacked the nervy backbone that good German Riesling has and as a result, it felt a little off-balance and too sweet. Structurally it reminded me quite a bit of the semi-sweet wines from Georgia, especially the Tsolikauri and the Tbilisuri, though the flavors here were definitely more in the honeyed grapefruit than the stone fruit and orange flavors of those wines. I drank this with turkey tacos and it was a serviceable wine in that capacity.