INGREDIENTS
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1 1/2 ounces unsweetened chocolate, chopped
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1 1/2 ounces semisweet chocolate, chopped
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1 cup all-purpose flour
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1/2 teaspoon baking powder
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1/2 teaspoon baking soda
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1/4 teaspoon salt
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1/2 cup unsalted butter, softened
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1 1/4 cups granulated sugar
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2 large eggs, room temperature
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1 teaspoon vanilla extract
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1/4 teaspoon instant espresso
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1/2 cup sour cream
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1/2 cup water