Chocolate Sheet Cake
["2 c. sifted flour", "2 c. sugar", "1/2 c. butter", "1/2 c. shortening", "4 Tbsp. cocoa", "1 c. water", "1/2 c. buttermilk", "1 tsp. vanilla", "1 tsp. cinnamon", "1 tsp. soda"]
["Put flour and sugar in large bowl.", "In pan bring to boil butter, shortening, cocoa and water.", "Pour over flour and sugar; mix well.", "Add buttermilk, vanilla, cinnamon and soda.", "Mix well and pour batter into greased and floured sheet pan.", "Bake for 20 minutes at 400\u00b0."]
["flour", "sugar", "butter", "shortening", "cocoa", "water", "buttermilk", "vanilla", "cinnamon", "soda"]