In a separate bowl, combine the bread crumbs, flour, all the spices, baking powder, and salt.
In another bowl, combine rum and port. Add flour mixture alternately with rum/port mixture into the batter.
Prepare a 9-inch cake or spring form pan by lining bottom and sides with parchment paper. Fill the pan 3/4 of the way and bake until a skewer comes out of the center of the cake clean, about an 1 hour and 10 minutes.