If you enjoyed a drop at Christmas, learning a little about port might help you appreciate it all year round.

If you have the faintest idea to what I am referring when I ask "do you know the Bishop of Norwich?" then, like me, you must be a fan of port wines. We may no longer be the main consumers of port, that'll be the French, but Britain's part in the history of this now most underrated of drinks is a long and illustrious one. Even if for many it is one of the most confusing categories of wine and one that is incorrectly relegated to an annual glass at Christmas.