Sorry, I'd edited the bit about lighting it out after realising it was the New Year cake we light, not the iced Christmas cake! But yes, a fruit cake that's been marinading in alcohol for some weeks, then you switch the lights off and light the cake as you carry it in to serve it. The alcohol burns off (well, some of it, anyway!) and then you put the lights back on and eat it... then go for a bit of a lie down afterwards, it's not for the faint-hearted!