Maria and Sepp Muster
Maria & Sepp Muster are among the most influential estates of the Austrian biodynamic and natural wine scene. Based in Schlossberg, near Leutschach an der Weinstraße in southern Styria, they farm around 10 hectares of steep hillsides. The soils are dominated by Opok, a local calcareous marl mixed with clay and silt, which plays a central role in the estate’s identity.
The family property dates back to the 18th century. Maria and Sepp took over the estate around 2000 and quickly turned to biodynamics, with Demeter certification from 2003. Over time, their approach became increasingly minimal: very limited soil work, careful observation of the vines, biodynamic treatments and a quest for the vineyard’s self-sustaining balance.
Sauvignon Blanc is particularly important, alongside Morillon (Chardonnay), Welschriesling, Gelber Muskateller and a few red varieties such as Blaufränkisch and Zweigelt. The cuvées are structured around different terroirs and levels of expression, notably Vom Opok, Graf and Sgaminegg.
In the cellar, fermentations are spontaneous, handling is limited and ageing often long, mainly in old barrels or large vessels. The wines generally spend a long time on lees. Fining and filtration are avoided, and sulfur is used very lightly or not at all depending on the cuvée. The estate is also known for its skin-contact whites, notably Gräfin and Erde.
Maria and Sepp played an important role in the emergence of the natural wine movement in Styria, notably through the Schmecke das Leben collective. In 2026, the estate remains fully active, while their son Elias gradually develops his own work as a winemaker, heralding a new generation within the family.