The Ultimate Chocolate Cake
["2 c. unsifted flour", "2/3 c. Hershey's cocoa", "1 1/4 tsp. baking soda", "1/4 tsp. baking powder", "1 2/3 c. sugar", "4 eggs", "1 tsp. vanilla", "1 c. Hellmann's real mayonnaise", "1 1/3 c. water"]
["Grease and flour bottoms of 2 (9-inch) layer cake pans.", "Mix first 4 ingredients; set aside.", "In large bowl with mixer at high speed, beat next 3 ingredients for 3 minutes or until light and fluffy.", "At low speed, beat in real mayonnaise.", "Add flour mixture in 4 additions alternately with water, beginning and ending with flour.", "Pour into pans.", "Bake in a 350\u00b0 oven for 30 to 35 minutes or until cake tester comes out clean.", "Cool in pans 10 minutes. Remove; cool on racks.", "Frost.", "Makes 2 (9-inch) layers."]
["flour", "cocoa", "baking soda", "baking powder", "sugar", "eggs", "vanilla", "mayonnaise", "water"]