1/2 c. cold water
1 tbsp. Knox gelatin
4 eggs
Few grains salt
1/3 c. lemon juice
1 c. sugar
1 tub Cool Whip
1 (10") baked pie shell

Soak gelatin in cold water. Place egg yolks in top of double boiler, add lemon and half of sugar. Cook over boiling water, stirring constantly until thick and creamy. Remove from heat, add gelatin. Add salt to egg whites and beat until stiff, add rest of sugar. Fold in cooked mixture, put in baked pie shell. Refrigerate until set. Top with Cool Whip.