Texas Sheet Cake
["1 stick margarine", "1/2 c. shortening", "5 Tbsp. cocoa", "1 c. water", "2 c. sugar", "1/2 tsp. salt", "2 c. flour", "1 tsp. soda", "2 eggs", "1 tsp. vanilla", "1/2 c. buttermilk"]
["Melt in saucepan and bring to a boil the margarine, shortening, cocoa and water.", "Blend and add the sugar, salt, flour and soda. Add eggs, vanilla and buttermilk.", "Bake at 350\u00b0 for 20 minutes in an oblong cake pan. Five minutes before cake is done; mix topping."]
["margarine", "shortening", "cocoa", "water", "sugar", "salt", "flour", "soda", "eggs", "vanilla", "buttermilk"]