Mayonnaise Cake
["1 c. mayonnaise", "1 c. sugar", "2 c. sifted flour", "4 Tbsp. Hershey's cocoa", "2 tsp. baking soda", "1 c. water", "2 tsp. vanilla"]
["Mix together all ingredients except vanilla until smooth.", "Add vanilla.", "Pour into greased and floured 13 x 9-inch pan or tube pan.", "Bake at 350\u00b0 for 30 to 45 minutes."]
["mayonnaise", "sugar", "flour", "cocoa", "baking soda", "water", "vanilla"]