Martin Müllen farms old vines in the underrated vineyards of Kröv and Trarbach, including the site he has made his flagship: Trarbacher Hühnerberg. He restored the small remaining ancient Hühnerberg vines, restored crumbling stone terraces; then replanted the majority of the site with new old-vine selections. Müllen seldom permits his fruit pre-fermentative skin contact per se, instead exclusively utilizing old basket presses that can require close to 24 hours for processing a load. The majority of Müllen wines ferment spontaneously in fuder and are only separated from their lees at bottling.

He is passionate about his mission: "our goal is to produce outstanding and unique Rieslings. The wines from the early 20th century are our great role models. To do this, we use techniques in key areas from the time when Moselle Riesling was one of the most valuable wines in the world."

In addition to the special wines from the Trarbacher Hühnerberg vineyard, the Müllen family also has a special holding in the town of Kröv. The Kröver Paradies vineyard is extremely steep, with vines between 35 and 110 years old, and have huge potential. The wines are characterized by great finesse. You can clearly taste the minerality – and therefore the slate – in them.