INGREDIENTS
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1 stick of unsalted butter
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3/4 cups sugar
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3 eggs
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zest from 1/2 an orange
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1 teaspoon vanilla extract
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2 teaspoons grand marnier
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1 cup all purpose flour
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2 tablespoons dark cocoa powder
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1/2 teaspoon baking powder
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3 oz of good semisweet chocolate (Callebaut for example)
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pinch salt