Preheat the oven to 350F. Spray three 8 inch cake pans with non stick baking spray. Line the bottom with an 8 inch parchment circle and spray again. Set aside.
In a medium sized bowl, sift together flour, sugar, cocoa powder, baking soda, baking powder, and salt. Set aside.
2 cups All-purpose flour, 1 ¾ cups White granulated sugar, ¾ cup Unsweetened cocoa powder, 2 teaspoon Baking powder, ½ teaspoon Baking soda, 1 teaspoon Salt
In a saucepan, heat water until hot and steaming.
1 cup Hot water
In a mixing bowl, combine buttermilk, oil, vanilla, and 3 eggs. Once it is all combined, slowly add in the hot water. Go slowly so you don't cook the eggs.
½ cup Oil, 1 teaspoon Pure vanilla extract, 1 cup Buttermilk, 3 Large eggs
Slowly add in the dry ingredients. Mix until just combined
Use a food scale to evenly disperse the batter into the 3 cake pans. Bake for 18-25 minutes. The cake is done when a toothpick inserted comes out clean.
Let the cakes sit in the pans for 10 minutes before transferring to a cooling rack. Allow the cakes to cool completely before decorating.