can I just ask , what is port wine???
How what we now know as 'Port' actually came to be is still a mystery :
- the wine shippers in Portugal originally added a couple of buckets of Brandy to the wine in order to stabilise it during the long sea journey back to England. And it is suggested that in order to speed up the shipping process the shippers started adding the Brandy earlier and earlier in the process until they started adding it during the fermentation.
- or, a story is told of a Liverpool merchant who sent his sons to Portugal in the 1670's to find a source of wine. In the Duoro valley they came across an abbot in a monastery in Lamego who was adding the Brandy during the fermentation process to increase the alcholic content.
Either way someone invented the great idea of adding Brandy during the fermentation process, which stops the development of the wine whilst it is still sweet and fruity, (and naturally strong due to the extra added Brandy).