This Boston Cream cake is my son Augusto’s favorite cake. Every September we leaf together through all my recipes and my cooking books in search of the perfect birthday cake. Every year we come back to this custardy and chocolaty three layer wander. The soft sponge cake layers are sandwiched and kept in place with a smooth and silky vanilla custard and then topped with an intense and bittersweet chocolate ganache, the kind that drips gracefully down the sides. The cake looks impressive and it might look hard to make but it’s actually very simple — if you get organized and follow the directions step by step. I make the sponge layers and the custard they day before the birthday; then I assemble the cake on a pretty stand and make the ganache an hour or two before I need to serve it. My son helps measuring and he is in charge of bowl and spoons licking, he is efficient and quick.