In a small bowl, mix the coffee, cocoa, and water. Set aside until cool.

Meanwhile, beat the eggs and sugar about 10 minutes, until light and lemon-colored.

Add the oil, flour, baking powder, and cooled coffee mixture. Beat everything together until well combined.

To bake, pick one of the following pan options:

a) 2 10-inch round pans and a 9- x 13-inch disposable pan

b) 1 10- x 15-inch pan and 1 8- x 8-inch pan

c) 2 9- x 13-inch disposable pans

Grease the pans. Bake at 350 degrees Fahrenheit (180 degrees Celsius) for 45 minutes, until a toothpick comes out clean (baking time may vary with pan size). Cool before frosting.

Put the frosting ingredients in a mixer. Beat for 15 minutes, until the frosting is thick and fluffy. Frost the cooled cake. Top it with grated chocolate, coconut flakes, and/or nuts.