Editor's note: The recipe below originally appeared in One Potato, Two Potato by Roy Finamore with Molly Stevens. It was reprinted, along with the introductory text included here, in The 150 Best American Recipes by Fran McCullough and Molly Stevens.
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Probably the most frustrating part of preparing Thanksgiving dinner is the last-minute potato mashing and gravy making. If you have this recipe in your arsenal, you can knock off the mashed potatoes 2 days ahead and have them sitting pretty in the refrigerator, ready for a last-minute heating. But that's not the only time you need these potatoes; they're also great for a buffet or for any crowd.
These luxurious mashed potatoes have a couple of other virtues, too. They're light and fluffy because they're whipped with an electric mixer, and they're incredibly luscious because they have sour cream and butter, plus cream cheese to give them a little edge.
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