Reserve wine system, most DACs have an additional "Reserve" designation for a wine which has slightly more strict requirements. Before the 1971 German wine law, a term corresponding to reserve wine existed in "kabinett", sometimes written as "Kabinettwein". In 1971, the similar-sounding term "Kabinett" was instead introduced as the lowest level of the "Prädikatswein" category, i.e., with a completely different meaning. Therefore, in the present German wine classification no legally defined term corresponding to reserve wine exists. Reserve wine Reserve wine is wine of a higher quality than usual, or a wine that has been aged before being sold, or both. Traditionally,
German wine from other parts of the Roman empire, as evidenced by Roman-style trellising systems surviving into the 18th century in some parts of Germany, such as the "Kammerbau" in the Palatinate. Almost nothing is known of the style or quality of "German" wines that were produced in the Roman era, with the exception of the fact that the poet Venantius Fortunatus mentions red German wine around AD 570. Before the era of Charlemagne, Germanic viticulture was practiced primarily, although not exclusively, on the western side of Rhine. Charlemagne is supposed to have brought viticulture to Rheingau. The eastward spread of viticulture