In saucepan combine sugar, flour,and salt. stir in next 3 ingredients.
Cook and stir till mixture thickens and comes to boiling; cook 2 minutes. stir small amount of hot mixture into egg yolks; returns to hot mixture, stirring constantly. cook an stir 2 minutes.
Spoon into cooled pastry shell. spread meringue a top pie, sealing meringue a top pie, sealing meringue to crust and bake in a moderate oven 350oF for 12 to 15 minutes.
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