From The Modern Family Cookbook
¼ teaspoon paprika
1 teaspoon dry mustard
1 teaspoon salt
2 teaspoons XXXX sugar
Dash cayenne pepper
2 egg yolks
¼ cup cider vinegar or lemon juice, chilled
1¾ cups olive or salad oil, chilled

Mix dry ingredients in mixing bowl. Add unbeaten egg yolks and mix well; then add ½ teaspoon vinegar or lemon juice. Add a few drops of oil, beating in with rotary egg beater or electric mixer. Continue adding oil by drops, beating thoroughly after each addition until about 2 tablespoons of oil have been added and the mixture has thickened. Beat in a little vinegar, the continue adding oil by teaspoons until 2 more tablespoons have been used. As mixture thickens, oil may be added in larger quantities, beating well after each addition. Add vinegar to thin the mixture whenever it becomes very stiff. Continue adding oil and vinegar, beating continuously until all has been used. 1 pint.

Note: If oil is added too rapidly at first, mayonnaise will not thicken’ but this thin mixture may be beaten into another egg yolk, a little at a time, and the rest of the oil and vinegar added when the new mixture has thickened up.