Spray the dried fruits with rum flavoring and let them sit while you make the cake. If there are large pieces of fruits such as figs and dates, cut them into smaller pieces. Beat the soft butter with the sugar and add the yolks one by one.
Once you get a fluffy and homogeneous mixture, add the sifted flour, baking powder, grated lemon rind and then mix in the dried fruits. Put the finished cake mixture into a greased, lightly floured rectangular oven dish.
Put the cake with dried fruits in a preheated oven and then immediately reduce the heat to a low setting. Bake slowly so it cooks fully.
Optionally, you can brush the finished cake with powdered sugar, a little melted butter and a little water.