Cut the frozen chocolate cake or pão-de-ló into rectangles that fit in a ice box. Line the box with wax paper. Layer a whipped heavy cream and another layer of cake on top. Let it freeze for 8 hours. Take it out of the box, remove the paper, and top it with whipped heavy cream. Serve whole and cut into slices at the table.
Cut the frozen chocolate cake or pão-de-ló into rectangles that fit in a ice box. Line the box with wax paper. Layer a whipped heavy cream and another layer of cake on top. Let it freeze for 8 hours. Take it out of the box, remove the paper, and top it with whipped heavy cream. Serve whole and cut into slices at the table.