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
Wine Country (California) combined counties of Napa, Sonoma, Mendocino, and Lake. These counties contain the following American Viticultural Areas (AVAs): The six-county North Coast AVA overlaps with the Wine Country as defined here. In addition, the names of the counties themselves are legal for use as appellation names. The earliest prehistory of the Wine Country involves habitation by several Native American tribes from approximately 8000 BC. The principal tribes living in this region included the Pomo, Coast Miwok, Wappo and Patwin, whose early peoples practiced certain forms of agriculture, but probably not involving the cultivation of grapes. During the Mexican Colonial period and