Omar the Pieman's Sweet Potato Pie

3 cups cooked, peeled and mashed sweet potatoes 
1 egg 
2 tablespoons melted butter 
1/8 teaspoon cinnamon 
1/8 teaspoon nutmeg 
1/2 - 3/4 cup cream 
1/2 teaspoon lemon juice 
2 teaspoons vanilla 
dash of salt 
3/4 cup sugar 

Mash and mix the potatoes with a rotary beater until they are smooth. Then add the other
ingredients to the potatoes and beat for 5 minutes.  Pour filling into unbaked 9" pie shell.
Place on a baking sheet and bake for 45-50 minutes at 350 degrees. Serve with ice cream 
or whipped cream, if desired.