This is a Thanksgiving classic, and Sancy would always make it with the variation at the end. And she would serve Syllabub with it, which is basically whipped cream with sherry in it.
Sweet Potato Pie
1 cup sugar
1 cup cooked, mashed sweet potato
¾ cup evaporated milk *
¼ cup milk
¼ cup butter, melted
2 tsp. vanilla
10 inch pie shell, unbaked
Preheat oven to 400°. Beat together eggs, sugar, and sweet potatoes. Add milk, butter, and vanilla. Pour into pie shell, and bake at 400° for 10 minutes. Then reduce heat to 325° and bake for 30 minutes more. When knife inserted comes out clean, the pie is done.
*¼ cup evaporated milk and ½ cup dry sherry may be substituted for ¾ cup evaporated milk.