Dry Riesling reveals the Terroir at Martin Tesch Dr Martin Tesch owns Weingut Tesch in the Nahe region of Germany. The estate has been family-owned since 1723, while the vineyards date back to Medieval times. These days, dry Riesling rules here. Tesch is a microbiologist by training but a winegrower by inclination. In 1996, he took over the estate from …