- 1 1/2 cups cake flour
- 1 cup white sugar
- 3 tablespoons unsweetened cocoa powder
- 3/4 teaspoon baking powder
- 3/4 teaspoon baking soda
- 1/2 teaspoon salt
- 1 cup water
- 5 tablespoons vegetable oil
- 1 tablespoon vinegar
- 1 teaspoon vanilla extract
- Preheat oven to 350 degrees F (175 degrees C).
- Grease and flour an 9×9-inch cake pan.
- Whisk together cake flour, sugar, cocoa powder, baking powder, baking soda, and salt in a large bowl. Make a well in the middle of the dry ingredients
- Whisk water, vegetable oil, vinegar, and vanilla extract in a separate bowl until thoroughly combined; pour the wet ingredients into the well in flour mixture.
- Stir until batter is smooth. Pour into prepared cake pan.
- Bake in preheated oven until cake springs back when lightly touched and a toothpick inserted into the center comes out clean, about 45 minutes.
- Cool in pan on wire rack for 15 minutes before removing cake to finish cooling on rack.