Decanting Vintage Port

[BojoLay]

tnks WW. 'learn something everyday -
As a youngen I use to watch Dad and Uncle sit on the porch every evening and share a small bottle of Gallo Port. My first impression was that Port must be a cheap wine. Then several years later as an older youngen I happen to see a bottle of port going for hundreds of dollars! Several of them. What gives? Is Port a delicatable that all should try at some time or another?