Sweet Potato Pie

Preheat the oven to 450 degrees. Peel the sweet potatoes or yams. Add butter, salt, spices and sugars to the hot or warm potatoes and mix well. (The butter will mix into the potatoes much better while they are still warm). Beat the yolks until light in color and add to potatoes, then add orange juice, peel and evaporated milk. Beat the egg whites until soft peaks form. Add 1/3 to potatoes and fold in to lighten the mix, then fold in rest of whites being careful not to deflate them. Pour into unbaked pie shell. Decorate the top with pecans if desired. Bake at 450 for 10 minutes, decrease oven temp to 350 and bake an additional 30 minutes or until the filling is slightly puffed, firm in the middle and crust is baked through. Serve with Whipped Cream or Vanilla Ice Cream.