Are you confused about Sting's new song "Soul Cake"?
Let me help you. Soul cake is a "small round cake which is traditionally made for All Souls' Day to celebrate the dead." MMMM!
The more cakes you eat, the more souls you save from purgatory. Now be a good Christian and eat some cake! If belatedly. But in my defense, Sting's album is kind of Christmas-y (and based on this novel).
Soul Cake Wikipedia article