grandma's lemon cream pie

Ingredients

• 1 cup sugar
• 5 tablespoons cornstarch
• 1/4 teaspoon salt
• 2 cups milk
• 3 - egg yolks, reserve whites
• 3 tablespoons butter
• 1 teaspoon lemon rind, grated
• 1/3 cup lemon juice
• 1 - 9 inch baked pie shell
• MERINGUE
• 3 - egg whites
• 1/4 teaspoon salt
• 1 teaspoon lemon juice
• 1/4 teaspoon vanilla extract
• 6 tablespoons sugar