Ah, crazy merkins with their queer notions of what constitutes a biscuit!
(fail)
Christmas pudding is this:
Flour, eggs, raisins, mixed peel, cows blood, spices and various other things go into it. Traditionally, you soak it in brandy, set fire to it and inhale the burning cow's blood to celebrate the birth of Christ and gain prophetic visions of the year ahead.
(Oh, and you probably don't want to investigate head cheese too much if you're the squeamish type).