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
Luxembourg wine they operate a sparkling wine plant in Wormeldange, which produces wines under the label Poll-Fabaire. Luxembourg mainly produces dry white wines and sparkling wine under the designation "Crémant". There are also some rosé and red wines made, as well as some sweet wines. In contrast to the downstream German wine region "Mosel", Luxembourg has very little tradition of producing semi-sweet or sweet wines, despite a significant similarity in terms of grape varieties. Rather, the wines of Luxembourg have been produced as a kind of cold climate version of traditional, dry Alsace wines. Common grape varieties in Luxembourg, and the vineyard