1 ounce unsweetened chocolate |
2 cups cake flour |
6 tablespoons unsweetened cocoa powder |
1-3/4 teaspoons baking powder |
1/2 teaspoon baking soda |
1/4 teaspoon salt |
1/4 cup vegetable oil |
2-1/2 tablespoons unsalted butter |
1-1/2 cups granulated sugar |
1 large egg |
4 egg whites |
1/4 cup room temperature coffee |
2-1/4 teaspoons vanilla extract |
3/4 cup plain yogurt |
2 tablespoons plain yogurt |
frosting |
3 large egg whites |
1/2 ounce unsweetened chocolate |
2-1/2 tablespoons light corn syrup |
3/4 cup granulated sugar |
1/8 teaspoon salt |
3/4 teaspoon vanilla extract |
1/4 teaspoon instant coffee powder |
1 teaspoon hot water |
1/4 cup powdered sugar |
3 tablespoons unsweetened cocoa powder |