The 2012 Weingut Angerhof Tschida Grüner Veltliner Eiswein is an ice wine from the  Burgenland region in Eastern Austria.  Burgenland is Austria’s key red wine region ( the main grapes being Blaufrankisch and and Zweigelt).  But sweet, primarily botrytized, wines are also a specialty of the region. This wine is a rarity. That’s because ice wine of Grüner Veltliner doesn’t often come…