Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
     2/3  cup           sugar
   2      tablespoons   cornstarch
     1/4  teaspoon      salt
   2      cups          milk
   3                    egg yolks -- beaten
   1      tablespoon    butter
   1      teaspoon      vanilla

Preparation:

Combine sugar, cornstarch and salt in a heavy saucepan. Stir in milk and cook over a medium flame until thickened and bubbly. Turn off flame; stir about half of the cooked mixture into egg yolks. Return egg mixture to pan mixing thoroughly. Bring to a boil and cook for 2 minutes. Stir in butter and vanilla. Cover surface with clear plastic wrap and let cool.