Combine raisins or currants, sugar, corn syrup, boiling water, melted fat, salt and spices in a saucepan. Place over moderate heat and simmer gently for 5 minutes. Cool. Add sifted flour, baking soda and baking powder; mix thoroughly and turn into a greased 9x5x3" loaf pan. Bake at 350 for 1 hour.
want to ice the cake, simply beat 1 egg white until frothy. Slowly beat into the egg white 1/2 cup of boiling corn syrup. Beat until stiff peaks form. Whip in 1/2 teaspoon vanilla extract and ice the cake immediately.