Final answer:
Port wine is a fortified wine from Portugal that can include up to 75 different grape varietals. It is known for its sweet taste and high alcohol content. Port can come in various styles, including Ruby, Tawny, Vintage, and LBV Ports.
Step-by-step explanation:
The fortified wine that can have up to 75 different grape varietals, which may or may not be blended, is known as Port. Port wine is traditionally produced in the Douro Valley of Portugal and is known for its rich, sweet taste and high alcohol content, which is achieved by the addition of grape spirit that halts fermentation at a certain point, leaving residual sugar in the wine.
The complexity of Port sometimes originates from the blend of multiple grape varieties, which can lead to a wide array of flavors and styles, from Ruby and Tawny Port to Vintage and Late Bottled Vintage (LBV) Port.