For more than 500 years the estate has been in family property. Since 1995 Marcus Haag, the grandson of Willi Haag, has been running the cellars in his own responsibility. After completing his studies at the polytechnic (viniculture) he took over the entire management in 1997. He successfully combines tradition with modern approaches in viniculture.
The estate Willi Haag cultivates 6 hectares of vineyards in steep, partly extremely steep location.The weather-beaten slate soil domination in the vineyards is perfectly suitable for the cultivation of the Riesling grape. 60 hl of wine per hectare are produced on average. 80% are left neturally sweet, 10% each are produced dry or semidry.
The promotion of wine-growing on the steep slopes and, connected with that, the conservation of this man-made landscape make the philosophy of the Haag family. Great importance is as well attached to the cultivation of the Riesling grape, so typical for the Moselle. Vineyards on steep slopes have a share of 95% and the Riesling is represented at 100%.