Ingredients
4 1/2 pounds russet potatoes (about 7 medium), peeled and cut into 1-inch pieces
3/4 cup whole milk
1/4 cup (1/2 stick) unsalted butter
1 cup sour cream
Coarse salt and ground pepper
Preparation
In a large pot, bring potatoes to a boil in salted water over high. Reduce to a rapid simmer and cook until potatoes are tender when pierced with a knife, about 15 minutes. Drain and return to pot. Mash until potatoes are fluffy and almost smooth.
In a small saucepan, heat milk and butter over medium-low until butter is melted and mixture is warm. Pour into potatoes and stir to combine. Stir in sour cream and season with salt and pepper.
