Here's how port is made: www.taylor.pt/en/what-is-port-wine/how-is-port-made

This bottle has been laid down in our wine rack since 1995 when we were given it as a Christmas present, so it's definitely vintage dust. I don't like port so am open to offers. I'm a tad ashamed of all the dust photos that I tried, so they are all deleted both from the camera and the hard drive. Now - let's clean, but the port bottle has gone back in the wine rack, almost untouched. ;-)