Port wine oxovitisin A, an oxovitisin, a type of pyranoanthocyanin with a 2-pyrone component. Port wine Port wine (also known as vinho do Porto, , Porto, and usually simply port) is a Portuguese fortified wine produced with distilled grape spirits exclusively in the Douro Valley in the northern provinces of Portugal. It is typically a sweet, red wine, often served as a dessert wine, though it also comes in dry, semi-dry, and white varieties. Fortified wines in the style of port are also produced outside Portugal, including in Australia, France, South Africa, Canada, India, Argentina, Spain, and the United States. Under European
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