The real joy here is not the cake itself but the filling. This is just a stupendous flavor for the center of a dessert. I can see the family just waiting for dinner to finish so that they can tear into this one! Beat the yolks until well blended and add other ingredients. Mix well and place in a double boiler. Cook, stirring often, until thick. Spread the filling between the cake layers. Traditionally, the cake was covered with a white vanilla butter icing and that is what I prefer. Place this on a footed cake plate and watch the excitement! From . Downloaded from Glens MM Recipe Archive, G Internet.