Yams, Lemon-nutmeg (Rehearsal Dinner)

6 Medium-sized sweet potatoes (about 3 pounds)
3 Tablespoons brown sugar
2 Tablespoons margarine
2 teaspoons lemon rind
1/2 teaspoon ground nutmeg
1/4 teaspoon salt

Scrub potatoes:prick several times with a fork. Bake at 375 for 1 hour or until done. Let potatoes cool slightly. Cut potatoes in half lengthwise, and scoop out pulp:discard skins. Place pulp in medium bowl:add brown sugar and remaining ingredients. Beat at medium speed of an electic mixer until mixture is smooth. Yield: 8 servings.