Chocolate cake with icing

Hmmm.. This is my son's favorite, not only him but my whole family. lol
Hope you'll like this too.

Ingredients:

{cake}
2/3 cup shortening
1 3/4 cups sugar
3 eggs
1/2 cup cocoa
1/2 cup water
2 1/4 cups flour
1 teaspoon salt
1 teaspoon baking soda
3/4 cup buttermilk

{icing}
2 cups sugar
1/2 cup cocoa
1/2 cup milk
1/2 cup (1 stick) margarine or butter
1 teaspoon pure vanilla extract

Procedure:

{cake}
1.Cream the shortening and the sugar together.
2.Beat in the eggs.
3.Blend and add the cocoa and water.
4.Sift together the flour, baking soda and salt.
5.Add alternately to the egg mixture with the buttermilk.
6.Grease and sprinkle cocoa in two 9 inch cake pans.
7.Pour batter into pans and bake at 350F. degrees for 35 minutes.
8.Remove to cool on a rack before icing.

{icing}
Mix ingredients and bring to a boil for one minute over medium high heat. Beat with wood spoon or mixer until the mixture begins to thicken. Spread on warm cake.