I'm not entirely sure I've ever had it. Partly because I'm not all that fond of cakes, but also because it always looked to me a bit like Christmas pudding, which is something that traumatised me as a kid one Christmas when my brother took a huge bite on a spoonful and it pretty much welded his jaws shut for several minutes. I have no idea what was in it, but I thought it was punishment for him complaining that the turkey was too dry.
The wild-eyed stare of panic and several alarmed hand gestures told me all I needed to know about cakes and stuff over the festive period, lol.