4 lb. cooked sweet potatoes
1/2 c. melted butter
6 eggs, separated
3/4 c. sugar
1/2 c. milk
1 tbsp. grated lemon rind
1 tsp. ground ginger
1/2 tsp. salt

Preheat oven to 325 degrees. Peel, mash potatoes. Beat potatoes to make as smooth as possible. Beat in melted butter. Add 3 egg yolks to mixture and beat until well blended (10 minutes). Add sugar, milk, lemon rind, ginger and salt. Beat egg whites until stiff and fold into potato mixture. Fold into buttered 2 quart souffle dish and bake for 1 hour.