3 lbs. scrubbed yams
1/4 tsp. ground white pepper
1/4 c. butter
3/4 c. milk
16 whole regular sized marshmallows

Boil yams in water with a dash of salt until fork tender. Peel and mash with 1 teaspoon salt and pepper. Grease a 2 1/2 quart casserole. Heat butter with milk until rim of bubbles form around edge of pan. Slowly pour hot milk and butter mixture into yams. Beat until mixed with electric beater. Spoon mixture into casserole. Push marshmallows 1/2" into yam mixture about 1" apart. Bake 35 to 40 minutes or until tops of marshmallows are golden brown.