Preheat the oven to 170 celsius or 340 degrees fahrenheit
Prepare the cake pans with butter and a light dusting of flour
Sift together the dry ingredients in a separate bowl. Flour, Chocolate Cocoa Powder, Sugar, Baking Soda, Salt. Stir to combine
In the mixing bowl add the melted butter, vanilla, and white vinegar. Stir to combine
Add the dry ingredients to the mixing bowl with the wet ingredients
Add the warm water and Stir to combine
Add the milk and stir to combine
Pour the batter equally into the 2 cake pans and lightly shake the pan to level out the batter
Place in the oven on the center rack to bake
After 27 minutes check for doneness by inserting a toothpick or fork into the cake. If it comes out clean it is done. Also, if you lightly press the top center of the cake and it springs back that is a good sign it is done
Remove pans from the oven and let rest for 10 minutes. You mayi want to take a knife and go around the edges to release the sides from the pan.
Remove the cake from the pans and let it completely cool for 50 minutes before frosting