Preheat oven to 350° and line the bottom of your cake pans with parchment
In a medium bowl combine flour, cocoa powder, baking soda and salt - whisk to combine.
In a stand mixer add the sugars, eggs, milk, acv, oil and vanilla - whisk to combine
Slowly add the dry ingredients to the wet ingredients- whisk to incorporate
Slowly add the hot coffee to the stand mixer until it is incorporated
Evenly distribute the batter between the three pans and pop into the oven for 25-30 minutes (I’d check at 20 minutes)
Let the cake cool for 10 minutes before turning it onto a cooling rack - let the cake cool completely before assembling - I like to pop mine into the refrigerator before assembling
While the cake bakes and cools lets make the filling and the buttercream!