Fortify with Brandy

[winemanden]

Call your flavoured wine what you will, but beware. If you call it Port, you may have the Port Police knocking on your door!

 

[winemaker81]

How do you know it won’t ferment once it’s bottled?

The likelihood of a ferment restarting in the bottle with ABV of 18+ is unlikely. I suspect the ferment gets that far simply because the yeast has enough mass to keep going. Once the wine clears and most of the yeast settles, restarting is tough.

In the case of using a strain other than EC-1118, most have a tolerance below 18, so restart is even less likely