Wikipedia
Port wine
Port wine (also known as Vinho do Porto, Porto, and often simply Port) is a Portuguese fortified wine from the Douro Valley in the northern provinces of Portugal.Porter, Darwin & Danforth Price (2000). Frommers Portugal 16th ed. IDG Books Worldwide, Inc. ISBN 0-02-863601-5. It is typically a sweet red wine, but also comes in dry, semi-dry and white varieties. It is often served as a dessert wine. Wines in the style of port are produced around the world in several countries—most notably Australia, South Africa, Canada, India, Argentina and the United States. Under European Union guidelines, only the product from Portugal may be labeled as Port. In the United States, the situation is more complicated: wines labelled Port may come from anywhere in the world, while the names Dao, Oporto, Porto, and Vinho do Porto have been recognized as foreign, non-generic names for wines originating in Portugal.
Port is produced from grapes grown and processed in the demarcated Douro region."Porter, Darwin 2000 p. 402">Porter, Darwin & Danforth Price (2000). Frommers Portugal 16th ed., p. 402. IDG Books Worldwide, Inc. ISBN 0-02-863601-5. The wine produced is then fortified by the addition of a neutral grape spirit known as Aguardente in order to stop the fermentation, leaving residual sugar in the wine, and to boost the alcohol content. The fortification spirit is sometimes referred to as Brandy but it bears little resemblance to commercial Brandies. The wine is then stored and aged, often in barrels stored in caves (Portuguese meaning "cellars") as is the case in Vila Nova de Gaia, before being bottled. The wine received its name, "Port," in the latter half of the 17th century from the seaport city of Porto at the mouth of the Douro River, where much of the product was brought to market or for export to other countries in Europe. The Douro valley where Port wine is produced was defined and established as a protected region, or appellation in 1756 — making it the thi read more at » http://en.wikipedia.org/wiki/Port+wine