The Ultimate Chocolate Cake
["2 c. flour", "2/3 c. cocoa", "1 1/4 tsp. baking soda", "1/4 tsp. baking powder", "1 2/3 c. sugar", "4 eggs", "1 tsp. vanilla", "1 c. mayonnaise", "1 1/3 c. water"]
["Grease and flour 2 (9-inch) layer cake pans.", "Mix first 4 ingredients; set aside.", "In large bowl with mixer at high speed, beat next 3 ingredients.", "At low speed, beat in mayonnaise.", "Add flour mixture alternately with water.", "Pour into pans.", "Bake at 350\u00b0 for 30 to 35 minutes."]
["flour", "cocoa", "baking soda", "baking powder", "sugar", "eggs", "vanilla", "mayonnaise", "water"]