2 cups sifted all-purpose flour
1/2 cup sour cream
1/2 teaspoon salt
2 cups granulated sugar
1 teaspoon baking soda
2 eggs
1 cup (2 sticks) margarine
4 tablespoons cocoa
1 cup water

In bowl, mix flour, sour cream, salt, sugar, baking soda and eggs.

In a pan, bring to boil margarine, cocoa and water. Add boiled mixture to dry ingredients, mix well, and pour into a large sheet cake pan, 15 1/2 x 10 1/2 inches, that has been greased and floured well. Bake at 350 degrees F for 20 minutes. This batter is very thin.

Frosting
1 box confectioners' sugar
1 cup chopped pecans
4 tablespoons cocoa
1 teaspoon vanilla extract
1/2 cup (1 stick) margarine
6 tablespoons milk

Mix sugar, vanilla extract and nuts in a pan. Boil margarine, milk and cocoa and add to dry ingredients, beating until smooth. Frost cake while cake is hot, as the frosting is very thick.