1/3cuplightly spooned into cup unsweetened cocoa (nonalkalized, such as Hershey's) (1 oz or 28 grams)
1cupwaterboiling
1teaspoonvanilla extract
¾cupmayonnaise
2cupssifted cake flour
1cupsugar
2teaspoonsbaking powder
1/2tspsalt
Instructions
Preheat oven to 350°F.
In a medium bowl whisk together cocoa and boiling water until smooth and cool to room temperature. Whisk in vanilla and mayonnaise.
In a large mixing bowl combine the remaining ingredients and mix on low speed for 30 seconds to blend. Add chocolate mixture. Mix on low speed until dry ingredients are moistened. Increase to medium (high speed if using hand mixer) and beat for 1 minute to aerate and develop cake's structure. Scrape batter into prepared pans (it will be very liquid) and fill the pans only about one third full.
Bake 20 to 25 minutes or until tester inserted near center comes out clean and cake springs back when pressed lightly in center. Cakes should start to shrink from sides of pans only alter removal from oven. Allow cakes to cool in pans on racks for 10 minutes. Loosen the sides with a small metal spatula and invert onto greased wire racks. Cool completely before wrapping airtight.