Preheaat oven 350 degr

To make the lemon filling: In a medium saucepan, whisk together 1 cup sugar, flour, cornstarch, and salt. Add water, lemon juice and lemon peel. Cook over medium heat, stirring constantly, until mixture boils. Stir in butter. Place the egg yolks in a small bowl and gradually beat in ½ cup of the hot sugar mixture. Beat egg yolk blend again with the rest of sugar blend . Bring mixture to a boil and keep to cook, stirring constantly, until thickened. Remove from heat. Cast filling into baked pastry crust.

To making  meringue: In a glass or metal bowl, whisk egg whites until foamy. Bit by bit adding sugar & continue to whisk TO stiff peaks form. Spreading  meringue on pie, to seal edges at crust.

Baking in preheated oven for 10 minutes, OR until meringue is golden brown.

Enjoy !