Balsamic Mashed Sweet Potatoes

From Gourmet, November 1998

• Ready In: 1 hr 40 mins
• Serves: 6

Ingredients

• 3  lbs sweet potatoes
• 2  tablespoons  fine-quality  balsamic vinegar
• 1⁄2 teaspoon ground cinnamon
• 1⁄4 cup nonfat sour cream
•  salt, pepper to taste

Directions

1. Preheat oven to 425°F.
2. With a fork prick sweet potatoes in several places and on a baking sheet bake in middle of oven until very tender, about 1 1/4 hours. When potatoes are cool enough to handle, remove skins and discard. In a food processor blend potatoes with vinegar and 1/4 teaspoon cinnamon until smooth. Transfer potatoes to a bowl and stir in sour cream until combined well. Season potatoes with salt and pepper. Sweet potatoes may be made 1 day ahead and chilled, covered. Reheat sweet potatoes, covered, in a 350°F oven about 30 minutes.
3. Serve sweet potatoes sprinkled with remaining 1/4 teaspoon cinnamon.