Chocolate Pie Filling

Directions

1. 1
   Mix sugar, salt, cocoa and cornstarch or flour until well blended, set aside.
2. 2
   Heat milk just till hot, add sugar mixture and bring to a boil in a heavy saucepan, stirring constantly. Beat egg yolks and add about 1/2 of hot mix while stirring.
3. 3
   Add back to hot custard in sauce pan while stirring.
4. 4
   Heat until boils again.
5. 5
   Stir in butter and vanilla and cool.
6. 6
   Pour into baked pie shell.