9" deep dish pie crust, baked
3 oz. lime Jello
1/2 c. lime juice
1 tsp. grated lime peel
1 (15 oz.) can Borden's sweetened condensed milk
1 egg yolk
1 egg white

Dissolve Jello as directed with 1 cup boiling water only. Add 1/2 cup lime juice and 1/2 teaspoon of grated lime peel. Add condensed milk and beaten egg yolk. Add little food coloring if desired. Put in refrigerator and chill until slightly thickened. While Jello mixture is chilling, whip 1 egg white until it forms peaks. Fold egg white into Jello mixture and pour into cooled baked pie shell. Chill another 2 to 3 hours and top with Cool Whip.