There is no grower on earth who has done more to advance the cause of great dry Riesling than Klaus-Peter Keller, a winegrower whom Jancis Robinson refers to as one of the "holy trinity" (along with Egon Müller and JJ Prüm) of German growers. The key to this standard-setting cuvée is Keller's impeccable plantation of old vines on fossilized limestone in what was once the poorly-regarded western Rheinhessen. Crystalline purity, razor-sharp cut, piercing aromatics of lemongrass and verbena and thirst-provoking minerality all feature here in one of the best basic Trocken bottlings of his storied career.