2 cup cooked mashed sweet potatoes

1 cup milk

2 eggs

2 tsp. salt

1 tsp. melted butter

1 tsp. grated lemon rind

Beat eggs slightly, add other ingredients and place in pan which has been lined with plain pastry. Place pie pan near bottom of oven. Start it in a hot oven 450 F. Bake for 15 minutes. Then turn heat down and continue baking for 30 minutes more in a moderate oven 350 F. Separate the eggs and save whites. When pie is cooked beat whites stiffly and add 4 tsp. sugar and spread over top of pie. Put in slow oven 300 F for about 20 minutes.