Bake pie shell or use a graham cracker crust if you prefer. Beat yolks on medium speed until thick and lemon-colored. Heat juice in a saucepan over medium heat until thoroughly heated. Gradually stir about quarter of hot lime juice into yolks and then add yolks to remaining hot lime juice in saucepan stirring constantly. Cook 2 minutes stirring continually. Remove from heat and cool. Add sweetened condensed milk stirring until mixture thickens. Spoon filling into crust. Refrigerate until thoroughly chilled. Beat cream with electric mixer at high speed until foamy. Add sugar, 1 tablespoon at a time until stiff peaks form. Spoon whipped cream onto pie. Refrigerate until serving time. Recipe By : Southern Traditions by Margaret Agnew