I was at a dinner this weekend and one attendee brought a bottle of 1983 Dr.. Dahlem Erben Rheinhessen Oppenheimer Herrenberg Riesling Eiswein to share after dinner. SOmewhat unique as I had never had icewine that was this old before. The wine was quite dark amber in glass and intially smelled terrible....sulpher, diesel and acrid nuts. Eventually aromas of honey,tart citrus and toffee came through. Fairly light bodied on the palate the initial sense was a tart acidity followed by sweetness then a finish of bright acidity again. The wine was very mature with notes of cedar and hazelnuts, madiera and toffee, orange marmalade and spices. I sipped it over an hour and it changed for the better than fell off quickly after an hour to an undrinkable flat mess. An interesting experience.