Port wines are forfeited which means that additional grapes spirits are added to the blend during processing to increase the alcohol content making it have a much higher alcohol content that other wines. There are several different classifications of port wine and it is based on the aging process.
Port wines derives it name from the the city of Porto located in the Douro Valley in northern Portugal. Port wines are usually made from combination of up to five different grape varieties, Touriga Nacional, Tinto Cao, Tina Barroca, Tinta Rozi, and Touriga Fanacesas. It tends have a much richer, sweeter and heavier flavor than other wines.
