- Combine the cake flour, cocoa powder, baking soda, and salt into a bowl. Stir together with a whisk until evenly combined. Set aside 
- In a large mixing bowl, add the the vanilla, buttermilk, eggs and oil and stir until combined 
- Add in the sugar and mix until combined 
- Add in the vinegar and food dye and stir until evenly incorporated 
- Once all the wet ingredients are incorporated, add in the dry ingredients. Stir until the mixture is just evenly combined  
- Once combined, add the hot water. The batter will be very thin 
- Pour the batter into 3 greased and floured 8-inch round cake pans 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 
- Once cooled, ice the cake with cream cheese icing (recipe below)