Real Lemon Meringue Pie

Directions

1. 1
   Beat egg yolks until foamy.
2. 2
   Stir in 1 cup sugar into the yolks very gradually, beating constantly.
3. 3
   Now stir in the flour and salt until smooth, then pour in lemon juice and mix thoroughly.
4. 4
   Add the boiling water last.
5. 5
   Cook over boiling water, stirring constantly, until the filling is smooth and thick. Takes about 20 minutes.
6. 6
   Cool before pouring into pie shell.