Ingredients:
- 1 tablespoon baking soda
- 1 1/2 cups sturdy espresso
- 2 1/3 cups all-cause flour
- 1 1/2 cups unsweetened cocoa powder
- 1 tablespoon baking powder
- 1 tablespoon vanilla extract
- 1 1/4 teaspoons salt
- 1 1/2 cups buttermilk
- 3 cups white sugar
- 3/4 cup unsalted butter , melted
- 5 big eggs