1 teaspoon baking powder
1 teaspoon baking soda
½ teaspoon salt
1 cup water
1 cup granulated sugar
4 oz dark chocolate, chopped (not semi-sweet or milk chocolate)
½ cup unsalted butter
½ cup vegetable oil
2 teaspoons vanilla extract
3 large eggs, room temperature
For the Espresso Buttercream:
2 teaspoons instant espresso powder
1 tablespoon water
1 cup unsalted butter, softened
5 cups powdered sugar
1 teaspoon vanilla extract
½ teaspoon salt (just a pinch)
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