Ingredients
Equipment
Method
- Preheat oven to 350°F (175°C). Grease and flour two 9-inch round cake pans.
- In a large bowl, whisk together flour, black cocoa, unsweetened cocoa, baking powder, baking soda, and salt.
- In another bowl, cream butter and sugar with a mixer until light and fluffy.
- Add eggs one at a time, mixing well after each addition.
- Mix in buttermilk, vegetable oil, vanilla extract, and vinegar until combined.
- Gradually add dry mixture to wet mixture, mixing until just combined.
- Stir in black food coloring until batter reaches desired shade.
- Divide batter evenly into pans and bake for 25–30 minutes, until a toothpick comes out clean.
- Cool cakes in pans for 10 minutes, then transfer to a wire rack to cool completely before frosting.
Notes
For best results, use high-quality black cocoa powder and gel-based food coloring to achieve a deep, intense black color. Pair with cream cheese frosting or dark chocolate ganache for contrast. Cakes can be baked ahead and stored wrapped at room temperature for up to 2 days.