...indeed, called "day and night" back home. I remember once asking my mom why she always has this cake at every single party, and she simply said that it's the easiest she knows to make, given the fact that before the cake making, she usually has to get a dozen of other dishes ready, plus cleaning up both outdoors and the house, and getting everything look good before guests arrive. Got credits, mom.
Use a basic sponge cake recipe, batter divided in half and cocoa powder added to one half of the batter. Heavy whipping cream and confectioners sugar are used for icing and chocolate (unsweetened) shavings for garnishing! The effect is casual but