Chocolate Sheet Cake
["2 c. sugar", "2 c. flour", "1/4 tsp. salt", "1 tsp. soda", "3 tsp. cocoa", "1 c. water", "1/2 c. margarine", "1/2 c. shortening", "1/2 c. buttermilk", "2 eggs", "1 tsp. vanilla"]
["Mix dry ingredients in large bowl.", "In 2-quart saucepan, combine water, cocoa, margarine and shortening; bring to boil, stirring occasionally.", "Pour hot mixture over dry ingredients; blend at low speed.", "Add buttermilk, eggs and vanilla; continue mixing until well blended.", "Bake at 400\u00b0 for 20 minutes in greased and floured 17 x 11 x 3/4-inch pan.", "Frost while hot."]
["sugar", "flour", "salt", "soda", "cocoa", "water", "margarine", "shortening", "buttermilk", "eggs", "vanilla"]