Best Chocolate Pie

Directions

1. 1
   In pot, combine sugar, cocoa and flour.
2. 2
   Stir and get out lumps.
3. 3
   Add milk and cook over low heat.
4. 4
   Stir as it thickens. When mixture gets very hot, add beaten egg yolks slowly as you stir.
5. 5
   Continue cooking and stirring until very thick.
6. 6
   Remove from heat; add margarine and vanilla.
7. 7
   Pour in pie shell.
8. 8
   Beat egg whites to make meringue.
9. 9
   (If using sugar, use only one tablespoon for each egg white.)