Cream butter and sugar. Add beaten eggs and 3 cups flour with baking powder and salt added. Mix remaining 1 cup of flour with chopped nuts and chopped candied fruits. Mix into batter and add vanilla. Grease, flour, and line a large tube pan. Pour mixture into pan. Bake at 250 for 3 hours. Let cool for an hour. Remove from pan and place in a covered container with a glass of sherry, so the cake and wine "get to know each other". Let sit for 4 days until the sherry flavor permeates the cake. Slice thin.
This recipe was created by a contestant during a cooking competition. It has not been tested for home use.