1 (9-inch) pie shell
6 egg yolks
6 egg whites
1/2 c. lime juice
3/4 c. sugar
1 can sweetened condensed milk
1/2 tsp. cream of tartar

Beat egg yolks until lemon colored. Blend in condensed milk; slowly add lime juice and mix well. Add cream of tartar to egg whites and beat until foamy. Continue beating, adding sugar 1 tablespoon at a time until egg whites peak.

Fold 6 tablespoons of the meringue into filling mixture. Pour into the baked pie shell. Top with the remaining meringue and bake in a slow oven until golden brown.