Preheat oven to 325 degrees.
In your large mixing bowl, add your all-purpose flour, salt, baking powder, baking soda, unsweetened cocoa, and granulated sugar and stir until combined.
Using your mixer on medium speed, mix in your vegetable oil, coffee, and milk. Mix for approximately two minutes.
Add eggs and vanilla extract and continue to mix on medium speed for about two more minutes.
Grease cake pan
Pour cake batter into cake pans and bake for 30-40 minutes. You cake is done when an inserted tooth pick comes out clean.
Carefully remove cake from oven and cool on a wire rack. Frost right before serving.