The Gruner Veltliner grape is perhaps the most planted variety in Austria. Until the 1980's thewine made from Gruner Veltliner was best described as "simple but fun" and most often found in the Heurigen (those fantastic wine and food places for which Vienna is so well known) and, despite their rather one-dimensioned qualities went very well with anything from potato salad to game dishes, from salamis to roast beef, lamb, pork and whatever.
Stating in the 1980's the Gruner Veltliner underwent a revolution – better care of the vineyards and more modern winemaking methods yielding wines that often attained excellence. There are those who say that at its best Gruner Veltliner reminds them of Chardonnay. On the other hand, Gruner Veltliner has become so popular in recent years that some today say that Chardonnay reminds them of Gruner Veltliner. A well written article about the grape can be found at http://www.winepros.org/wine101/grape_p ... gruner.htm
Several of my tasting notes for better editions of Gruner Veltliner can be found at http://www.stratsplace.com/cgi-bin/sear ... =&UserID=4
With regard to Hafner, a producer of entirely kosher wines, several of my tasting notes can be found at http://www.stratsplace.com/cgi-bin/sear ... =&UserID=4
Although not particularly current, those tasting notes can be taken as typical of both style and quality.