Lemon Angel Pie

Directions

1. 1
   Beat egg whites until frothy.
2. 2
   Add salt and vinegar.
3. 3
   Continue beating until stiff.
4. 4
   Gradually add sugar (about 2 tablespoons at a time), beating thoroughly after each addition.
5. 5
   Continue beating until all sugar is dissolved and mixture is very stiff.
6. 6
   Spread in well-greased and floured 9-inch pie pan, making edges slightly higher than center.
7. 7
   Bake in slow oven, 275° for 1 1/4 hours. Cool.