"A merry Christmas, Bob!" said Scrooge, with an earnestness that could not be mistaken, as he clapped him on the back. "A merrier Christmas, Bob, my good fellow, than I have given you for many a year! I'll raise your salary, and endeavour to assist your struggling family, and we will discuss your affairs this very afternoon, over a Christmas bowl of smoking bishop"
There are many recipes which a similar and I think it is fair to same you can swap and change the citrus component based on availability and tweak the spices to taste the only constants being the wine and ruby port. I noted down this unreferenced recipe from the cover of an old cook book so if you are in the mood for some holiday cheer Dickens style have a go