Memmie'S Chocolate Pie

Directions

1. 1
   Bake pie crust according to directions on package.
2. 2
   Heat milk in double boiler.
3. 3
   While it is heating, mix sugar, salt, cornstarch and cocoa well; set aside.
4. 4
   Beat egg yellows slightly, adding 1/3 cup of the warmed milk.
5. 5
   Pour egg mixture back into milk in double boiler.
6. 6
   Add sugar mixture.
7. 7
   Stir constantly over medium heat until thick.
8. 8
   Remove from heat.
9. 9
   Add butter and vanilla.
10. 10
    Allow to cool slightly.
11. 11
    Pour into cool baked pie shell.
12. 12
    Top with meringue.