Key Lime Pie

Directions

1. 1
   Beat egg yolks until lemon colored.
2. 2
   Blend in condensed milk slowly.
3. 3
   Add lime juice and mix well.
4. 4
   Add cream of tartar to egg whites and beat until foamy.
5. 5
   Continue beating, adding sugar 1 tablespoon at a time, until egg whites peak.
6. 6
   Fold 6 tablespoons of the meringue into the filling mixture.