Rummer

A rummer (also known as a Römer or Roemer, among other variations) was a type of large drinking glass studded with prunts to ensure a safe grip, popular mainly in the Rhineland and the Netherlands from the 15th through the 17th century.

Römers were quite distinct from the Berkemeyers, but both types evolved from the German "cabbage stalk" glasses which were cylindrical with prunts.

From as early as the third century AD, skilled glass workers along the Rhine were producing work of great artistic merit.

Excavations at Worms, Trier, Cologne, and in the Eifel revealed glass factories that were probably Roman in origin—indeed, Römer is German for 'Roman'.

Out of this era grew that hallmark of German glass, the prunt, a design feature which is still found fifteen centuries later.