Smoking bishop is a type of mulled wine, punch, or wassail, especially popular in Victorian England at Christmas time, and it is mentioned in Dickens' 1843 story A Christmas Carol.
[1] Smoking bishop was made from port, red wine, lemons or Seville oranges, sugar, and spices such as cloves.
Put small but equal quantities of cinnamon, cloves, mace, and allspice, with a race of ginger, into a saucepan with half a pint of water: let it boil until it is reduced one-half.
Boil one bottle of port wine, burn a portion of the spirit out of it by applying a lighted paper to the saucepan; put the roasted lemon and spice into the wine ; stir it up well, and let it stand near the fire ten minutes.
Bishop is frequently made with a Seville orange stuck with cloves and slowly roasted, and its flavour "to many tastes is infinitely finer" than that of the lemon.