Willi Schaefer are a small family winery that dates back to the year 1121. They produce exclusively Riesling, because this grape variety is qualitatively the best that thrives on the weathered Devonian slate soil. The parcels are located in Graacher Dompropst and Graacher Himmelreich, as well as in Wehlener Sonnenuhr. The plots are located on steep slate slopes and consist of up to 100-year-old, ungrafted vines.