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Spoon the brown sugar into a 1-quart jar and press down until you have an even layer.
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Sift the flour, baking powder, baking soda and salt into a bowl; spoon into the jar over the brown sugar.
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Sprinkle ginger, cinnamon and cloves over the top.
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Seal the jar and attach a tag with the following instructions:.
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Preheat oven to 350 deg F.
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Pour contents of the jar into a large bowl and stir in 3/4 cup melted unsalted butter (1 1/2 sticks) and 1 large egg.
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Roll the dough into balls the size of large marbles and place an inch apart on an ungreased baking sheet.
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Bake in the middle of the oven until firm and lightly browned on the edges, about 14 minutes.
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Transfer cookies to racks to cool.