Name for an alcohol-enriched product made from partially fermented grape. Wine, a mixture of these two, grape must or a mixture of grape must and wine is obtained. To the Spriten may be more neutral alcohol from products of grapevine with at least 96% vol or different products of wine ( brandy. Tresterbrand etc.) with at least 52% vol and a maximum... Found on https://glossary.wein-plus.eu/fortified
Port and sherry are the two most famous fortified wines. With Port, grapes are crushed and allowed to ferment a bit, and then spirit is added to produce a sweet, alcoholic wine. With sherry, fermentation is completed and then spirit is added.
Found on http://www.encyclo.co.uk/local/20433