Creamy Lemon Meringue Pie

3 eggs
1 c sugar
1/3 c flour
1 1/2 c condensed milk
1/2 c water
Juice and grated rind from one lemon
1 T butter

Combine milk and water in saucepan. Beat egg yolks until thick and smooth and add to milk. Add lemon juice, rind, and butter. Cook 2 minutes. Pour into baked pie crust. Cover with meringue made with stiffly beaten egg whites, 3 T sugar and pinch of cream of tartar. Bake in 325 F oven for 20 minutes.