Chess Pie

Directions

1. 1
   Prepare unbaked pie shell.
2. 2
   Mix butter and sugar and simmer slowly, stirring for 5 minutes.
3. 3
   Remove from heat and let cool slightly, stirring constantly.
4. 4
   Add eggs, one at a time, beating well.
5. 5
   Add vanilla, salt and vinegar; mix well.
6. 6
   Pour into pie shell and bake at 400° for 15 minutes; reduce heat to 350° and bake for 20 to 30 minutes.
7. 7
   Shake pie gently.
8. 8
   It is done when center gives slightly.