Anatomy of a layer cake

Today I would like to demonstrate how to assemble a simple layer cake, the banana blitz (or nannersplosion, please feel free to comment and let me know which name you like better), from start to finish.

To begin, the cake layers should have been baked, cooled, then wrapped in plastic wrap and frozen overnight. Bring them to room temperature to thaw for 1 hour before assembly. Also, put previously-made buttercream and ganache on the counter at room temperature for an hour as well.

Grab an appropriately sized cake board (at least 1" larger in diameter than your cake), place a small smear of buttercream on the middle of the board to keep it from sliding. Unwrap one of your cake layers and place it top-side down on the middle of the cake board. If you left your parchment on the cake when it cooled (a good idea), you can place your hand here to steady the cake as you cut it in half. Use a long, sharp, serrated knife (at least a couple inches longer than the cake) and start slicing through on one side in the center of the layer. If you watch the other end of your knife while you are moving the cake around, you will see that the knife continues to follow the path you originally cut. This helps to keep the layers even. Once the cake is cut in layers, remove the top half and set it aside.