The VDP’s two regional auctions in Trier and Bad Kreuznach in September are key dates for Riesling collectors. I was invited to attend pre-auction tastings held by the producers over the summer ahead of the auctions themselves. This article explains how these auctions work, but far more detail on the vintage and wineries will be in the respective regional reports covering Rheinhessen & Nahe and Mosel, Saar & Ruwer.