Ingredients:

  Amount  Measure       Ingredient -- Preparation Method
--------  ------------  --------------------------------
   4                    egg yolks
   1      teaspoon      Salt
   2      teaspoons     Dry mustard
   6      tablespoons   Vinegar
   3      cups          salad oil
   3      tablespoons   Flour or cornstarch
   1      cup           boiling water
   2      tablespoons   Sugar
     1/4  cup           vinegar
   1      tablespoon    Salt

Preparation:

With mixer blend egg yolks, 1 t. Salt., 2 T. sugar, and 2 T., vinegar. Very slowly add 1 cup oil, a few drops at a time, and mix thoroughly. Add remaining oil, a little faster but be careful to blend each addition before adding more oil. When all oil has been added, add 4 T. Vinegar. Now put remaining ingredients in a saucepan and cook to a smooth paste. Add this hot mixture to the mayonnaise and blend well. Pour in a container and cool in the refrigerator. Makes slightly more than 1 quart.