Dr. Loosen, established 1652, controls some of Mosel's finest vineyard parcels across multiple renowned sites demonstrating exceptional terroir quality. The Erdener Treppchen vineyard ('vineyard steps') rises in dramatic terraced slopes above the Moselle river, with blue-grey slate and Devonian schist soils that impart vibrant minerality and distinctive character. The steep terrain demands labour-intensive hand cultivation, a practice maintained across generations with respect for the vineyard's delicate environment. The estate employs sustainable viticulture respecting fragile slate ecosystems. The 2023 vintage benefited from Mosel's cool continental climate, yielding physiologically ripe Riesling.

Harvesting prioritises optimal phenolic and sugar ripeness, with selective picking across multiple passes through the vineyard. After gentle crushing and pneumatic pressing to avoid excessive extraction, musts ferment in stainless steel using natural yeasts, typically lasting three to four months or longer. The wine remains in contact with fine lees through winter months, developing subtle autolytic texture and complexity through gradual maturation. Minimal sulphite addition preserves natural flavours whilst ensuring stability and longevity. Spring clarification and bottling without fining or filtration retain the wine's delicate mineral expression and natural aromatics.