Dr. L Sparkling Riesling is 100% pure Riesling — the crisp, fruity grape that has made German wine famous for centuries. It is made using the Charmat method, where the second fermentation is done in a pressurized tank to keep the bubbles in the wine. This method produces bright, clean sparkling wines in a more affordable way, which makes it possible to offer this charming bubbler at a very nice everyday price.