To cut a longer explanation short, if you go and buy a German Reisling at around the same price, you'll probably get a similar styled wine. Googling Piesporter Wine still shows plenty of places selling it.When I was younger my mum used to buy wine before Xmas dinner and I remember it made me really hungry instantly.
the wines were called Niersteiner and Piersporter. Both German. You cant seem to get them in supermarkets any more, but is Riesling a suitable substitute?