1/2 tablespoon salt
1/8 teaspoon pepper
6 tablespoons sugar, level
1 teaspoon mustard
4 teaspoons butter
1 cup vinegar
4 teaspoons flour
1 cup thick sour cream
Mix the first six and heat to a boiling point. Mix the cream and flour until smooth, then add the beaten egg gradually, then the boiling vinegar. Cook in double boiler until like thick cream.
Submitted by Mrs. Jack Uhlenbrock of St. Louis, Mo.
*Blogger's note: apparently you also need an egg.