1 can sweetened condensed milk
4 egg yolks
1/2 c. key lime juice
1 egg white
3 egg whites
6 tbsp. sugar
1/2 tsp. cream of tartar
1 pie shell, baked

Mix together condensed milk, egg yolks and lime juice. Beat 1 egg white stiff. Fold into mixture. Pour into baked pie shell. Beat 3 egg whites stiff and gradually add sugar and cream of tartar. Spread over filling forming peaks. Bake until egg whites become golden brown at 350 degrees.