INGREDIENTS
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2 cups Idahoan Original Mashed Potatoes, dry (from the 13.75 oz or 26.2 oz box—NOT from the 2 oz pouch)
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1 cube + 2 Tbsp unsalted butter
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8 oz Coca-Cola (or Guinness for an adult cake)
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1/2 cup unsweetened cocoa powder
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1 3/4 cups superfine sugar
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1/2 cup sour cream
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2 medium eggs
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1 Tbsp vanilla
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2 1/2 tsp baking soda
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2 8-oz packages cream cheese
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1/3 cup heavy cream
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3/4 cup powdered sugar