Port wine be labelled as "port" or "Porto". In the United States, wines labelled "port" may come from anywhere in the world, while the names "Oporto", "Porto", and "Vinho do Porto" have been recognized as foreign, non-generic names for port wines originating in Portugal. Port is produced from grapes grown and processed in the demarcated Douro region. 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
Mexican wine U.S. and Canada, and most wineries offer tours and wine tasting. Most of Mexico’s wine innovation occurs in the Ensenada area, in the form of the so-called “"boutique"” producers such as Casa de Piedra, whose first vintage was produced in 1997. This operation only produces one white, called Piedra del Sol and a red called Vino de Piedra. Another small producer is Viña de Liceaga, which produces reds. Don Miller owns a ranch and winery called Casa Adobe Guadalupe with a wine school here to help small producers make a profit and draw tourists. There is even one organic wine