Combine the sugar, flour, cocoa powder, baking soda, baking powder, and salt into a bowl. Stir together with a whisk until evenly combined
Add the vanilla, eggs, buttermilk, and oil and stir until combined
Once combined, add the hot coffee. Stir quickly to ensure the hot coffee is evenly distributed. The batter will be very thin
Pour the batter into 3 greased and floured 8 or 9" round cake pan and cook for ~30-40 minutes (ovens vary so test with a toothpick in the center and remove when it comes out clean) 350 F – make sure a toothpick comes out clean
Set aside to cool
Ganache:
To make the ganache, add chocolate, butter, salt, and vanilla into a bowl. Set asideIn a small pan over medium heat, heat cream and sugar until hot but just before boiling
Pour the heated cream and sugar over the bowl of chocolate and let it set for 1 minute. Stir until smooth
Set in the fridge until cooled but not hard
Assembly:
Take the cooled cake and even out the tops by evenly slicing off the rounded part off of each cake layer with a serrated knife so it is flat.
Once they are flat, carefully cut cake each layer in half. You should now have 6 even layers
Then assemble the cake, putting down one layer then around ~1/6 of the ganache, spreading in an even layer. You should have 12 layers in total of alternative cake and ganache once complete.
Notes
Cake recipe based off of the classic “Hershey’s Black Magic Cake”