Make mayonnaise using a food processor. Place 2 eggs, 2 tablespoons vinegar, ½ teaspoon mustard powder, ¼ teaspoon pepper powder, 1 ½ teaspoons salt and 3 teaspoons sugar in the bowl and turn the switch on for a few seconds to blend. Pour in the oil in a thin stream until the mayonnaise is thick and creamy. This will take a few minutes.