Fabulous Chocolate Cake
["3 sq. unsweetened chocolate", "2 c. sifted cake flour", "1 tsp. salt", "2 c. sugar", "2 eggs", "1/2 c. margarine", "1 c. water", "1 1/4 tsp. baking soda", "1 c. sour cream", "1 1/2 tsp. vanilla"]
["Grease and flour 2 (8-inch) round cake pans.", "Combine chocolate, butter and water in top of double boiler and heat until melted; let cool.", "Sift flour, soda and salt into large bowl. Beat eggs with sour cream until blended in medium bowl.", "Beat in sugar and vanilla.", "Stir in cooled chocolate.", "Beat into flour half at a time, just until smooth.", "It will be thin.", "Pour evenly into pans.", "Bake in moderate oven (350\u00b0) for 40 minutes.", "Cool in pans."]
["unsweetened chocolate", "cake flour", "salt", "sugar", "eggs", "margarine", "water", "baking soda", "sour cream", "vanilla"]