Ingredients:
1 envelope unflavored Knox® gelatin
1/2 cup sugar
1/4 tsp. salt
4 egg yolks
Juice of 4 limes
1/4 cup cold water
1 tsp. grated lime peel
2 drops green food color
4 egg whites
1/2 cup sugar
1 cup heavy cream, whipped
9" pie shell, pre-cooked
Directions:
Mix the gelatin, the first ½ cup of sugar and the salt in a heavy saucepan.
Beat the egg yolks, the lime juice and the water together. Stir the mixture into the gelatin mixture.
Cook over medium heat, stirring constantly until barely boiled. Remove the saucepan from the heat.
Stir in the lime peels and the food coloring.
Chill until the mixture thickens, but is not yet set.
Beat the egg whites with the remaining 1/2 cup sugar until it forms stiff peaks. Fold them into the lime mixture. Make and fold in all but one cup of the whipped cream as well. Refrigerate the extra whipped cream.
Smooth the filling into the pre-baked pie shell and refrigerate covered overnight.
Garnish with rosettes of whip cream just before serving.