How's it made?  Ruby port is a blend of wines from various vineyards and several different years.  Like all ports it becomes "fortified wine" when grape brandy is added at a critical point in the process, stopping fermentation and making the wine around 20% abv.  Ruby ports are typically aged for three years in wood before being bottled and they will last a few years in the bottle, but not too long.  "Vintage Character" and "Reserve" are rubies aged for four to six years.

Drinking - this is the port most people start their love of port with, usually after dinner.  Ruby should not need decanted so it's a no-fuss port and easy drinking. Serve around 18-20C.

Food - a good port for after dinner with the cheese and coffee.