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| salted butter: 1/2 cup |
| granulated sugar: 2 cups |
| all-purpose flour (unsifted): 2 cups |
| sour cream: 1 cup |
| baking soda: 1/2 tsp |
| salt: 1/4 tsp |
| vanilla extract: 2 tsp |
| unsweetened cocoa powder (sifted): 1/2 cup |
| water: 3/4 cup (hot) |
| eggs: 3 (whites//beaten stiff) |
| powdered sugar (for topping) |
Credit: Food.com