Fruitcake

"Uncle Vernon [tried] to knock in a nail with the piece of fruitcake Aunt Petunia had just brought him."

- Description.

Fruitcake is a cake made with chopped candied fruit and/or dried fruit, nuts, and spices, and (optionally) soaked in spirits. Vernon Dursley once tried to knock in a nail with a piece of fruitcake.

Appearances

 * Harry Potter and the Philosopher's Stone