The "Winzergenossenschaft Mayschoß-Altenahr e.G." was founded in 1868 under the name "Winzerverein Mayschoß an der Ahr". Mergers took place in 1982 with the Winzergenossenschaft Altenahr and in 2009 with the Winzergenossenschaft Walporzheim, founded in 1871 - since then Weinmanufaktur Walporzheim. Matthias Baltes is responsible as chairman and managing director, Rudolf Stodden as sales manager and Rolf Münster as cellar master. Visits to the historic wine barrel cellar with its adjoining wine museum are possible. In addition, a variety of events are organised, such as culinary wine tastings with top chefs all about wine.
Today, 450 members cultivate 150 hectares of vineyards in the German Ahr wine region, including the individual vineyards in Eck (Altenahr), Sonnenberg (Neuenahr), Kräuterberg (Walporzheim), Burgberg, Laacherberg and Mönchberg (Mayschoß). The main grape variety with about two thirds isPinot Noir (Spätburgunder), followed by Riesling with about 15%. Other grape varieties are , Weißburgunder(Pinot Blanc), Blauer Portugieser, Domina, Müller-Thurgau, Kerner and Regent. The internal quality programs are particularly characterized by yield reductions in the vineyards of the participating winegrowers. The vineyards are subjected to a credit assessment twice a year, whereby mainly yield reduction, as well as leaf wall care, soil care and the health of the vines are checked.
The cooperative is particularly dedicated to the production of quality red wines. The premium wines include Walporzheimer Kräuterberg Spätburgunder, Pinot Noir "R" Ahr-Spätburgunder as well as a special collection of site wines. In 2020, the WG was able to take second place in the international cooperative cup of the trade magazine Vinum, among other awards, and emerged as the "Best German Cooperative". The average annual production is 1.2 million bottles. The wines are largely marketed in the three vinotheques in Altenahr, Mayschoß and Walporzheim. The cooperative is a member of the winegrowers' association Generation Riesling.