In a small bowl mix together flour baking soda baking powder and cocoa.
Marble mayonnaise cake.
Repeat with remaining cake layers.
Then pop the layers into the preheated oven for 34 35 minutes or until a toothpick comes out clean.
In a large bowl mix together sugar eggs and vanilla on high speed for 3 4 minutes until light and creamy.
Ingredients 2 cups all purpose flour 2 teaspoons baking powder teaspoon salt 1 cup white sugar cup butter softened 2 large eggs eggs 1 teaspoon vanilla extract 1 cup milk 2 tablespoons unsweetened cocoa powder.
Ingredients 1 cup mayonnaise 1 cup white sugar cup water 2 cups all purpose flour 1 teaspoons baking soda 4 tablespoons unsweetened cocoa powder teaspoon salt 2 teaspoons vanilla extract.
Place the chocolate marble cake on top and press down gently into the ganache.
Preheat oven to 350.
Place the mayonnaise cake on a large cake plate.
Spread a generous amount of the ganache on top of the sliced cake.