Solera by the producers of sherry. In a Spanish sherry "solera", the vintner may transfer about a third of each barrel a year. A solera sherry has to be at least three years old when bottled. A quite similar process is called sostrera, used to produce fortified wines in the Mediterranean regions of France. In Sicily, where Marsala wine is made, the system is called "in perpetuum". Solera vinification is used in the making of Mavrodafni ("Black Laurel"), a fortified red dessert wine made in the Northern Peloponnese in Greece. Exceptional "Mavrodafni" vintages are released every 20 or 30 years: they
Marsala renamed "Marsa ʿAlī" "ʿAlī's harbour" or maybe, "Marsa ʿāliyy", "Big harbour", for the width of the ancient harbour, placed near Punta d'Alga. Another possible derivation is "Marsa Allāh", "God's harbour". Another theory is that "Marsala" comes from "mare salis", "salt pans by the sea" from the presence of salt pans along the whole northern coast, although mention of this theory cannot be found in contemporary references and the installation of the bigger salt ponds on the group of islands composing the contemporary single island "Isola Lunga" was made just during the 19th century. Since the end of the 11th century,