Mayonnaise Cake
["2 c. flour", "1 c. sugar", "5 Tbsp. cocoa", "2 tsp. baking soda", "1/2 tsp. salt", "1 c. mayonnaise", "1 c. cold water", "1 tsp. vanilla"]
["Combine dry ingredients.", "Add mayonnaise, water and vanilla; mix well.", "Bake at 350\u00b0 for 25 to 30 minutes.", "Makes 2 (8-inch) layers."]
["flour", "sugar", "cocoa", "baking soda", "salt", "mayonnaise", "cold water", "vanilla"]