Preheat your oven to 350°F and grease two 9-inch round cake pans.
In a large bowl, whisk together coffee, buttermilk, eggs, oil, and vanilla.
In a separate bowl, sift together flour, sugar, cocoa powder, baking soda, baking powder, and salt.
Gradually add dry ingredients into the wet ingredients, mixing until just combined.
Divide the batter evenly between the prepared pans.
Bake for 30-35 minutes or until a toothpick comes out clean from the center.
Let cakes cool in the pans for 10 minutes, then transfer to wire racks to cool completely.
Frost with your favorite chocolate or mocha frosting and serve!