Sheila Lukins and Julee Rosso's mashed potatoes have a cult following, though it's unclear whether this is due to their ease, their make-ahead friendliness, or the three kinds of dairy (butter, sour cream, and cream cheese). Adapted slightly from Silver Palate Cookbook (Workman Publishing Company, 2007) —Food52
large baking potatoes (about 5 pounds), peeled and diced
Place the diced potatoes in a large saucepan and add water to cover. Heat to boiling. Reduce heat and simmer over medium heat until tender. Drain.
Place the potatoes in a mixer bowl. Cut the butter and cream cheese into small pieces and add to the potatoes. Beat with an electric mixer until light and fluffy. Beat in sour cream. Season with the nutmeg and salt and pepper to taste.
Serve immediately or reheat in a buttered casserole at 300° F for 20 minutes, if you want to prepare them in advance.