Old-Fashioned Lemon Pie

1 1/2 cups granulated sugar
1 1/2 cups water
1 tablespoon butter
2 tablespoons cornstarch
1/3 teaspoon cream of tartar
3 eggs
2 lemons, juiced, and rinds grated
1 baked pie shell

Mix 1 cup sugar, 1 cup water and butter. Let boil 3 minutes.

Add cornstarch mixed with remaining 1/2 cup water. Stir well. Add grated rind of lemons and juice. Add egg yolks and stir well until mixture thickens. Remove from heat and let cool.

Beat egg whites until very stiff; add remaining 1/2 cup sugar, a little at a time, to egg whites and fold one-third egg white mixture into pie filling. Pour into the pie shell. Add cream of tartar to remainder of egg white mixture to form meringue; cover pie with meringue. Bake 15 minutes in oven preheated to 400 degrees F and TURNED OFF before placing pie inside. Let pie remain in oven until meringue is golden brown.