INGREDIENTS
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Cake
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1 1/2 pounds sweet potatoes (about 2 to 3 medium or 2 large)
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2 cups (250 grams) all-purpose flour
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1 3/4 teaspoons baking powder
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1/2 teaspoon baking soda
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1/2 teaspoon table salt
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1 teaspoon ground cinnamon
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1/4 teaspoon (more to taste) ground ginger
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Two pinches (more to taste) ground cloves
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1/2 cup (1 stick or 115 grams) unsalted butter, at room temperature
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1 cup (190 grams) packed light brown sugar
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1/2 teaspoon vanilla extract
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2 large eggs
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Frosting
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3 large egg whites
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3/4 cup granulated sugar
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Pinch of salt
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1/4 teaspoon cream of tartar (will help stabilize egg whites, don’t worry if you don’t have it)
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1/2 teaspoon vanilla extract