Key Lime Pie

Thoroughly mix the gelatin, sugar and salt in a saucepan. Beat together the egg yolks, lime juice and water; stir into the gelatin mixture. Cook over medium heat, stirring constantly, just until the mixture comes to a boil.

Remove from the heat; stir in the grated peel.

Add the food coloring sparingly to give a pale green color.

Chill, stirring occasionally, until mixture mounds slightly when dropped from spoon. Beat the egg whites until soft peaks form; gradually add 1/2 cup sugar, beating to stiff peaks. Fold the gelatin mixture into the egg whites; fold the whipped cream.

Pile into the pastry shell.

Chill until firm.

Spread with additional whipped cream and edge with grated lime.