Chocolate Fudge Sheet Cake
["2 c. flour", "2 c. sugar", "1/2 tsp. salt", "1/2 c. margarine, softened", "3 1/2 Tbsp. baking cocoa", "1/2 c. shortening", "1 c. water", "2 eggs, slightly beaten", "1 tsp. vanilla extract", "1 tsp. soda", "1/2 c. buttermilk", "Frosting"]
["Sift flour, sugar and salt into large bowl.", "Combine margarine, baking cocoa, shortening and water in saucepan.", "Bring to a boil, stirring constantly.", "Add to flour mixture; mix well. Add eggs, vanilla, soda and buttermilk; mix well.", "Pour into greased and floured 11 x 18-inch cake pan.", "Bake at 350\u00b0 for 30 minutes.", "Pour frosting over hot cake.", "Yield:", "15 servings."]
["flour", "sugar", "salt", "margarine", "baking cocoa", "shortening", "water", "eggs", "vanilla extract", "soda", "buttermilk", "Frosting"]