3 cups all-purpose flour
2 cups sugar
1/3 cup baking cocoa
2 teaspoons baking soda
1 teaspoon salt
2 eggs
1 cup milk
1 cup vegetable oil
1 cup water
1 teaspoon vanilla extract
 
FILLING:
1/4 cup butter or margarine, softened
1/4 cup shortening
2 cups confectioners' sugar
3 tablespoons milk
1 teaspoon vanilla extract
Pinch salt
Chocolate frosting