Mom'S Lemon Pie
["1 1/3 c. sugar", "1/2 c. cornstarch", "1/4 tsp. salt", "1 3/4 c. water", "4 eggs", "1 Tbsp. lemon rind", "1/2 c. lemon juice", "2 Tbsp. butter", "1 baked pie shell"]
["Combine all ingredients, except butter, in pan and cook until smooth.", "Add butter.", "Pour into baked pie shell.", "Serve with Cool Whip topping."]
["sugar", "cornstarch", "salt", "water", "eggs", "lemon rind", "lemon juice", "butter", "shell"]