Steps
1. Preheat oven to 350°F (175°C) and grease a cake pan.
2. In a bowl, sift together flour, cocoa powder, baking powder, baking soda, and salt.
3. In another bowl, cream butter and sugar until light and fluffy.
4. Beat in eggs one at a time, then stir in vanilla.
5. Mix in the flour mixture alternatively with milk and coffee.
6. Pour batter into the prepared pan and bake for 30-35 minutes.
7. Let cool before serving.