*** Mix sugar, flour and salt together. Add water to make a paste. Cook over low heat until thick, stirring constantly. Add a little of the hot mixture to the beaten egg yolks, then add remaining hot mixture. Cook over low heat for 2 minutes. Remove from heat then add butter. Cool. Then add lemon juice and grated rind. Chill thoroughly. Pour into a baked pie shell. Cover with meringue.
*** Beat egg whites until frothy, then add sugar gradually (1/2 tsp at a time) beating constantly. Add vanilla and salt. Pile lightly on pie then bake at 325F for 12 to 15 minutes or until golden brown.
Cajun Country -- New Iberia, Louisiana