Chocolate Marble Loaf Cake
["1/3 c. shortening", "1 tsp. vanilla", "2 tsp. baking powder", "2/3 c. milk", "1 (1 oz.) sq. unsweetened chocolate, melted", "2 Tbsp. hot water", "1 c. sugar", "2 c. sifted cake flour", "1/4 tsp. salt", "3 stiffly beaten eggs", "1/4 tsp. soda"]
["Stir the shortening to soften.", "Gradually add sugar and cream together until light and fluffy.", "Add vanilla.", "Sift flour, baking powder and salt together 3 times; add to creamed mixture alternately with milk, a small amount at a time.", "Beat until smooth after each addition.", "Fold in egg whites.", "Combine chocolate, water and soda; add to 1/2 the batter.", "Alternate light and dark batters by spoonfuls in paper-lined 10 x 5 x 3-inch loaf pan.", "Bake at 350\u00b0 for about 60 minutes.", "Cool and frost with creamy chocolate frosting."]
["shortening", "vanilla", "baking powder", "milk", "unsweetened chocolate", "water", "sugar", "cake flour", "salt", "eggs", "soda"]