Chocolate Mayonnaise Cake
["2 c. flour", "1 c. sugar", "4 Tbsp. cocoa", "2 tsp. soda", "1 tsp. vanilla", "1 c. mayonnaise", "1 c. warm water"]
["Mix dry ingredients. Add mayonnaise, water and vanilla.", "Pour in floured sheet cake pan. Bake at 325\u00b0 for 30 to 35 minutes. Frost with your favorite icing."]
["flour", "sugar", "cocoa", "soda", "vanilla", "mayonnaise", "water"]