1 1/2 c. sugar
5 1/2 tbsp. or 1/3 c. cornstarch
1 1/2 c. water
3 egg yolks, slightly beaten
3 tbsp. butter
4 tbsp. lemon juice
1 1/3 tbsp. grated lemon rind

Mix in saucepan sugar and cornstarch. Stir in gradually water. Cook over moderate heat, stirring constantly, until mixture thickens. Boil 1 minute. Stir half the hot mixture into beaten egg yolks. Return to pan. Boil 1 minute longer, stirring constantly. Remove from heat. Blend in butter, lemon juice and lemon rind. Pour into baked pie shell. Cover with meringue. Bake.