Bring to boil and cool:
2 cubes butter or margarine
1 C. water
4 T. cocoa
2 C. flour
½ t. salt
1¼ t. soda
2 eggs, beaten
2 C. sugar
½ C. sour cream
1 t. vanilla
Heat oven to 350˚. Sift flour, baking soda and salt into large bowl. Beat eggs with sour cream until blended in medium size bowl. Beat in sugar and vanilla. Stir in cooled chocolate mixture. Beat into flour mixture, half at a time just until smooth. Batter will be thin.
Pour evenly into 2 greased and floured round 8" cake pans or jelly roll pan. Bake at 350˚ for 35-40 minutes, 18-20 for jelly roll pan, or until center springs back when lightly pressed with finger tip. Pour frosting over cake while still hot.
Chocolate Frosting
Heat until well blended:
1 cube butter or margarine
4 T. cocoa
6 T. milk
Add one pound powdered sugar (4 cups). Mix well and pour over warm cake. Nuts may be added if desired. Use only 2 cups powdered sugar for thinner frosting.