Step 1

Mix together the flour, salt, baking soda, baking powder, sugar, and cocoa powder together in a large bowl.

Step 2

Place mix into a container and refrigerate until you decide to bake the whole cake. The mix should be fine for up to a few weeks.

Step 3

Mix the eggs, vanilla extract, milk, and the coffee together in a separate bowl and then add it to the dry mixture. Put the cake mix into a pan and place it into the oven for 30 minutes at 350°F. Let cool.