Wiktionary
ruby port
n. The cheapest and most extensively produced type of port, with a rich claret colour.
Usage examples of "ruby port".
All the guests were out, perhaps at Son of the Beast from Outer Space, but from her kitchen Mrs Bamber sang, the merry widow of a tram-driver, a song smelling of oysters and ruby port.
I bought a poor boy of ruby port and uncapped it and dragged Japhy into an alley and we drank.
Dancer raised his goblet and watched the flames change colour through the ruby port and smiled contentedly.
Her voice was deep, rich, like ruby port, and held more than a hint of a Southern accent.