For best results, ensure the cream filling is completely cool before assembling the cake to prevent the cake from becoming soggy.
The chocolate glaze should be poured quickly while still warm enough to spread, but not so hot that it melts the cake layers.
Store leftovers in the refrigerator, covered, for up to 3 days. Bring to room temperature for 30 minutes before serving for optimal texture.
You can substitute heavy cream for part of the milk in the filling for a richer flavor.