Frosted Orange Pie
["3/4 C. sugar", "1/2 C. all-purpose flour", "1/4 tsp. salt", "1 1/4 C. water", "2 egg yolks, lightly beaten", "2 to 3 Tbsp. grated orange peel", "1/2 tsp. grated lemon peel", "1/2 C. orange juice", "2 Tbsp. lemon juice", "1 pastry shell (9 inches), baked"]
["In a saucepan, combine sugar, flour and salt; gradually add water.", "Cook and stir over medium-high heat for 2-3 minutes or until thickened and bubbly.", "Remove from heat.", "Gradually stir 1/2 C. into egg yolks; return all to pan.", "Bring to a gentle boil; cook and stir for 2 minutes.", "Remove from the heat; stir in orange and lemon peel.", "Gently stir in juices.", "Pour into pastry shell. Cool on a wire rack for 1 hour.", "Chill at least 3 hours."]
["sugar", "flour", "salt", "water", "egg yolks", "orange juice", "lemon juice", "pastry shell"]