Winemaker Notes - The Heinz Eifel Eiswein (Ice Wine) is a gastronomic specialty made from hand-picked frozen grapes. These frozen grapes produce only a small amount of highly concentrated juice. Eiswein can age for many years or can be enjoyed now. Heinz Eifel is a brand of German Riesling wines that are crafted from the highest quality grapes processed with only the most modern standards, techniques and technology. Unlike many larger German wineries, Heinz Eifel himself has control over the entire winemaking process ﾗ from vine to bottle.