Preheat oven to 350.
Marble mayonnaise cake.
Trim the top layer by slicing off a thin disc of the cake.
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.
Then pop the layers into the preheated oven for 34 35 minutes or until a toothpick comes out clean.
Try to create the lines using one continuous motion going up and down and then side to side.
Spread a generous amount of the ganache on top of the sliced cake.
Repeat with remaining cake layers.
In a small bowl mix together flour baking soda baking powder and cocoa.
Place the chocolate marble cake on top and press down gently into the ganache.
Place the mayonnaise cake on a large cake plate.