Mashed Sweet Potatoes

A few years ago my mom asked me to find a new side dish for Thanksgiving. That very day I decided to watch an episode of America's Test Kitchen. They demonstrated this recipe for mashed sweet potatoes and I decided it needed to be a dish at Thanksgiving. We've served these sweet, creamy taters ever since.

MASHED SWEET POTATOES
4 T butter, cut into 4 pieces
2 T heavy cream
1/2 t salt
1 t sugar
2 pounds of sweet potatoes, peeled and cut into equal pieces
1/4 t black pepper

Combine butter, cream, salt, sugar and potatoes in a large pot. Stir together then cook, covered, on low heat. Stir occasionally. Cook until potatoes fall apart when poked with a fork, 35-45 minutes. Remove from heat. Mash potatoes then beat until smooth. Stir in pepper and serve.