This cake is very moist, but my grandmother never added an icing. She made a cinnamon glaze.
1 Heat oven to 325 degrees(165 degrees C). Grease a 9 x 5 inch pan. Set aside.
2 In 3 quart saucepan, boil raisins slowly water until there is 1 cup of water left and the raisins are plump. Allow mixture to cool.
3 Stir in sugar and egg. Mix spices with boiling water and add to raisin mixture. Add flour, soda, vanilla and last, the melted shortening. Blend well. Pour into loaf pan.
4 Bake for 40 to 50 minutes. When cool make glaze by mixing confectioners sugar, ground cinnamon, and milk. Spread on top of cooled cake.