Espresso Chocolate Marble Cake

1: Mix espresso powder, cocoa powder and water until dissolved.

2: Sift the dry ingredients (flour, baking powder, baking soda, and salt if using).

3: Beat the butter and sugar together.

4: Beat in the eggs, one at a time.

5: Add the vanilla.

6: Start adding half of the sifted dry ingredients.

7: Add the sour cream.

8: Add the remaining dry ingredients.

9: Mix a quarter of the vanilla mix with the espresso mixture.

10: Scoop dollops of batter into the lined pan, alternating between flavors.

11: Use a skewer to swirl the batters to create a marbled effect without over swirling.

12: Optionally add icing or glaze before serving.