Key Lime Pie
Combine sugar and cornstarch in medium saucepan. Stir in milk until smooth. Stir in egg yolks and lime juice. Add butter. Cook and stir on medium heat until mixture comes to a boil. Boil 1 minute. Remove from heat. Stir in gelatin mixture slowly. Pour into large bowl. Chill 40 to 50 minutes. Fold in sour cream. Pour into baked pie crust. Chill hours.