Greet guests arriving for a chilly-weather wedding with a warm cocktail, like this spiced cranberry drink fortified with port. A cinnamon stick is a flavorful stirrer.
In a medium saucepan, combine all ingredients except port and kumquats. Bring mixture to a simmer over medium heat. Remove from heat. Cover, and let steep until ready to serve, up to 1 day.
Just before serving, add port to mixture in saucepan, and bring to a simmer; do not boil. Keep warm over low heat while serving. Strain and divide among glasses, and garnish each with a cinnamon stick and kumquat slice, if desired.