A sweet wine made from sultanas called passum was already produced in ancient Rome. Today, a wine made from dried grapes is called passito in Italy. In the middle of the 19th century, phylloxera was introduced from North America, which subsequently destroyed around three quarters of European vineyards and led to a major wine shortage. In 1880, this led to the idea of producing wine from sultanas in France.
There was also a successful book on the "art" of production. Ground sultanas were mixed with water heated to 30 °Celsius in a ratio of 1:3 and then left to ferment for 14 days. The result was mixed with simple wine. In 1890, production totalled around one ninth of the total French wine production.
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Markus J. Eser
Weinakademiker und Herausgeber „Der Weinkalender“