2 ½ cups flour 2 cups sugar 2 tsp baking powder 2 tsp soda 3 heaping tbsp cocoa 1 tsp salt Mix then add: ½ cup melted margarine 2 cups hot water 2 tbsp vinegar Beat a few minutes. Pour in 9'x13' pan. Bake 25 min @ 350. Frost cake while still warm with boiled frosting.