From Wiktionary, the free dictionary
black cake (countable and uncountable, plural black cakes)
- A Caribbean fruitcake based on the English plum pudding, with plums and raisins soaked in rum.
2022, Ayanna Lloyd Banwo, When We Were Birds, Hamish Hamilton, page 177:‘She was telling her daughter the best way to soak the fruit for black cake one Christmas.’