From a site called I Am Baker and just that different from others on this site. This cake is one of those cakes that works perfectly as one. The ganache on its own is a bit bitter (when using semi-sweet chocolate), the filling is light and wonderful but does not stand alone like a pudding or sweet frosting, and the cake is just chocolate perfection. But these three elements work together in perfect harmony. this filling is also known as an Ermine frosting. This frosting has a few extra steps compared to a traditional American buttercream, but the result is well worth it. Subtle and creamy, it is the PERFECT filling for this beyond rich cake.