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 wine are "secco" (with a maximum 40 grams of residual sugar per liter), "semisecco" (41–100 g/l) and "sweet" (over 100 g/l). The color and aging classifications are as follows: Marsala wine was traditionally served as an aperitif between the first and second courses of a meal. Contemporary diners will serve its drier versions chilled with Parmesan (stravecchio), Gorgonzola, Roquefort, and other spicy cheeses, with fruits or pastries, and the sweeter at room temperature as a dessert wine. Marsala is sometimes discussed with another Sicilian wine, "Passito di Pantelleria" (Pantelleria Island's raisin wine). Marsala wine is frequently used in cooking, and is