• Preheat oven to 350°F (175°C). Grease and flour three 8-inch round cake pans.
• In a large bowl, whisk together the flour, sugar, cocoa powder, baking powder, baking soda, and salt.
• Add the milk, vegetable oil, eggs, and vanilla extract to the flour mixture and beat on medium speed until well combined.
• Stir in the boiling water and instant coffee granules until the batter is smooth. The batter will be thin.
• Divide the batter evenly among the prepared pans.
• Bake for 30-35 minutes or until a toothpick inserted into the center comes out clean.
• Let the cakes cool in the pans for 10 minutes, then transfer to a wire rack to cool completely.

For the frosting:

• Beat the butter until creamy. Gradually add the powdered sugar and cocoa powder, beating until well combined.
• Add the vanilla extract and brewed coffee, beating until the frosting is smooth and fluffy.

To assemble:

• Place one cake layer on a serving plate. Spread a layer of frosting over the top. Repeat with the second and third layers.
• Frost the top and sides of the cake with the remaining frosting.
• Pipe chocolate frosting on top and Garnish with chocolate shavings.
• Slice, Serve and Enjoy.