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
Sack (wine) spirit rather than wine." Sack (wine) Sack is an antiquated wine term referring to white fortified wine imported from mainland Spain or the Canary Islands. There was sack of different origins such as: The term Sherris sack later gave way to sherry as the English term for fortified wine from Jerez. Since sherry is practically the only one of these wines still widely exported and consumed, "sack" (by itself, without qualifier) is commonly but not quite correctly quoted as an old synonym for sherry. Most sack was probably sweet, and matured in wooden barrels for a limited time. In modern