The fundamental difference between Port wine and other wines is its fortification with aguardiente which stops the fermentation. Thus, the wine preserves the original sweetness of the grapes but has a high alcohol content.
When British merchants discovered Port wine in the seventeenth century and transported it back to Britain, the wine would go bad during the journey, so they decided to fortify it with aguardiente so it would preserve better.
Wine tours in Porto
You can visit numerous wine lodges in Gaia, where you’ll explore the installations with a guide that will explain the winemaking process.
The tour ends with a tasting of the Cellar’s wines (usually two select Porto wines).
Porto's most famous wineries
Visiting at least one of Porto’s renowned wineries is an absolute must: one of the most interesting attractions in Portugal’s second most populated city.
The guided tours are carried out in the language chosen by the first person to reserve the visit, so be sure to book the visit significantly ahead of time.
If you want to visit several Cellars, you can purchase a combo ticket. An interesting option is a ticket that includes the Sandeman, Offley and Ferreira wine lodges.
If you take a sightseeing cruise along the Douro River, the promoter will probably offer you combo tickets with a wine cellar. Make sure the price is worthwhile because sometimes the Cellars included in the ticket are free to visit.