INGREDIENTS
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3 ounces good quality unsweetened chocolate
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1 cup unsalted butter, room temp
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2 cups dark brown sugar, packed
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3 eggs
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2 1/4 cups cake flour
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2 teaspoons baking soda
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1/2 teaspoon salt
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1/4 cup buttermilk
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1 cup boiling water
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2 teaspoons vanilla extract