The term is of Arabic origin and means "handshake". This refers to the ancient custom of concluding a contract with a handshake and a shared drink. According to another version, the origin was the Low German term for "schöpfen", which was borrowed into French as chopine and then borrowed back again. In German-speaking countries, Schoppen is a very old liquid measure with locally very different volumes. Among others, 0.564 l for the Palatinate, 0.459 l for Württemberg, 0.375 l for Baden and Switzerland, and 0.476 l for the French chopine are mentioned. In southern Germany, before the introduction of metric measurements, the Schoppen was the official designation for 0.5 l until 1884. Today, a "ganzer Schoppen" in the Palatinate means 0.5 litres. In Rheinhessen, the volume is 0.4 litres, and here there is also a "halve Schoppen" called Halwe (Halbe) with 0.2 litres. Special wine glass shapes with the contents of a Schoppen are Dubbeglas, Geripptes and Mainzer Stange. A Schoppen is therefore not bound to any particular glass shape.
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freier Autor und Weinberater (Fine, Vinum u.a.), Bad Krozingen