Blue Nun is an historic wine brand from Germany. It has been associated for much of its history with a single, semi-sweet Liebfraumilch wine, but today encompasses a range of styles from several countries.
They repositioned the brand, reclassifying it from a Liebfraumilch to a regular Qualitätswein bestimmter Anbaugebiete (QbA), changing the grapes from Müller-Thurgau to 30% Riesling, and making it less sweet. It remains relatively low in alcohol at 9.5%.