Pre-heat oven to 350 degrees F. Grease and flour two 10 x 3 inch round pans.
In a bowl, combine coffee powder, whisk until smooth.
Add water and whisk until smooth.
Whisk together dry ingredients; cake flour, baking soda, baking powder and salt.
In the bowl of an electric mixer, beat at high speed until light and fluffy: butter and sugar. Reduce mixer to medium speed and slowly add vanilla and eggs, one at a time.
Add the dry ingredients and cocoa mixture, mixing until smooth.
Pour into baking pans and bake at 350 degrees F. for 25-35 minutes or until a cake tester inserted in the center comes out clean.
Cool cakes on a wire rack for 15-20 minutes before turning them our of their pans.