1 lb. cooked and peeled sweet potatoes
1 1/4 c. sugar
1/2 c. butter
6 egg yolks, well beaten
1 tbsp. grated lemon rind
1/4 tsp. mace
1 c. orange juice
6 egg whites
1 tbsp. slivered citron

Rub potatoes through a sieve, then add 1 cup sugar and butter. Combine with egg yolks, lemon rind, mace and orange juice. Beat the egg whites until stiff, then fold carefully into sweet potato mixture. Place in a greased 3 quart baking dish. Sprinkle with remaining slivered citron. Bake at 350 degrees for 1 hour.