- 1 1/2 cups unbleached white flour
- 1/3 cup cocoa powder
- 1 teaspoon baking soda
- 1/2 teaspoon salt
- 1 cup sugar
- 1/2 cup vegetable oil
- 1 cup cold water or 1 cup brewed coffee (I used cold coffee)
- 2 teaspoons vanilla extract
- 2 tablespoons white vinegar
Preheat the oven to 375°F. Sift the flour, cocoa, baking soda, salt and sugar into an ungreased 8 inch square or 9 inch round baking tin.
In a bowl, measure and mix the oil, water or coffee and vanilla.
Pour the liquid ingredients into the baking tin and mix the batter with a fork or small whisk.
When the batter is smooth, add the vinegar and stir quickly. Pale swirls will occur where the vinegar and baking soda react. Stir just until the vinegar is even distributed throughout the batter.
Bake for 25-30 minutes. Set aside the cake to cool.
Sprinkle cake with powdered sugar while warm.