Sweet Potato Pie - cooking recipe

Ingredients

6 medium yams, mashed
1 c. butter
1/2 c. white sugar
1 c. brown sugar
3 eggs, separated
1 1/2 tsp. baking powder
1 tsp. vanilla
1 c. cream
1/4 tsp. salt
1 tsp. cinnamon
1/4 tsp. ginger
pinch of cloves
1/8 tsp. allspice
2 unbaked pie shells

Preparation

Mash potatoes with butter.
Add sugars.
Beat egg yolks; add with cream, vanilla and spices until cool.
Stir in baking powder. Beat egg whites and fold in.
Fill 2 unbaked pastry shells.
Bake at 450\u00b0 for 15 minutes, then 350\u00b0 for next 45 minutes.