During the Middle Ages and Renaissance, Glass drinking vessels in central Europe primarily came from forest Glass workshops. As the name implies, they were located in forests, used the wood available there and frequently moved around. The tradition of straight-sided ‘Stangenglas’ beakers has survived to this day in the typical Cologne beer Glass and Düsseldorf Altbier Glass. As early as the 16th and 17th centuries, Glasses of this type were common for drinking beer from the Netherlands to East Prussia, as evidenced by corresponding archeological finds and Dutch genre and still-life painting. The Glasses were produced in large numbers for daily use probably mainly in Germany, but only very few specimens have been preserved intact. Glassmakers hardly ever went to any effort decorating such Glasses. Fragments of Glasses with an all-round applied network of threads have been found at sites in Göttingen and Worms, and in the Netherlands, in Dordrecht and Rotterdam. (Dedo von Kerssenbrock-Krosigk)