This chocolate espresso cake consists of layers of rich espresso chocolate cake filled and covered with espresso buttercream. The espresso buttercream is a Russian buttercream infused with espresso powder to get an incredible coffee-flavored dessert. If you love coffee, this is the ideal cake for you, easy to make and full of flavor. The chocolate cake uses the all-in-one method so it's very simple, and the buttercream has just a few ingredients. Easy homebaking for a birthday cake or party.