Roter Riesling
Roter Riesling is a VERY RARE wine grape that is primarily grown in Germany and Austria.
The regions of Rheingau, Mosel, and Pfalz in Germany, as well as Wachau and Kamptal in Austria, are known having some Roter Riesling.
The grape itself has a pink or reddish skin, hence the name "Roter" Riesling.