Texas Sheetcake

2 cups sugar
2 cups sifted flour
1/2 teaspoon salt
6 tablespoon cocoa
1/2 lb. margarine
1 teaspoon baking soda
1 teaspoon vanilla
2 eggs, slightly beaten
1/2 cup buttermilk or 1/2 cup milk + 1 1/2 teaspoon vinegar

Sift the sugar, flour, and salt into a large bowl. Melt together the margarine, cocoa, and 1 cup water. Bring the cocoa mixture to a rapid boil and pour over the flour and sugar. Stir well. Add the buttermilk, vinegar, eggs, vanilla, and baking soda. Mix well and pour into a greased and floured 16x11 pan. Bake 20-25 minutes at 400oF.

Ice with chocolate nut icing.