Step 1

Preheat oven to 350F/180C and grease two 8-inch round pans. Set aside.

Step 2

In the bowl of an electric mixer or large bowl with a whisk combine the eggs, vanilla, mayonnaise, and buttermilk mix until fully combined. Place a large fine mesh sieve on top and add all of the dry ingredients. Sift into the wet ingredients then use a spatula to fold in to combine. Once just combined add the hot coffee and mix carefully not to splash yourself. The cake batter will be very thin. Pour evenly into prepared pans.

Step 3

Bake for 25-30 minutes or until a toothpick inserted comes out clean/ only moist crumbs, no wet batter. Set cakes on a wire rack to cool completely.

Step 4

While the cakes are cooling prepare chocolate frosting. When cakes are fully cooled begin frosting.

Step 5

Add about 1 heaping cup of frosting to the center and use an angled spatula to spread it into an even layer, bend down to eye level with the cake to make sure the frosting is in an even layer.

Step 6

Add the second cake layer bottom side up, the bottom side of the cake is generally straighter than the top so this helps create an even top of the cake.

Step 7

Using a straight icing spatula press and gently spread chunks of frosting on the side, about 8 times, then you can evenly spread the frosting together creating a crumb-free coat of frosting. For the top layer use the back of a spoon to swirl the frosting and add sprinkles if desired. Store the cake in an airtight container at room temperature, if you live in a warm environment you might want to store the cake in the refrigerator.