I never understood fruitcake. It has citrus peels in it. Nobody willingly eats peels. You throw them away and eat the rest. But for some reason, at Christmas, you save the peels and put them in a cake. That's like making chicken soup with bones but no actual chicken. Putting booze in the cake is probably just a way of getting the recipient drunk so that he doesn't notice he's eating ingredients that should have been thrown away.