Instant Mayonaise?

CS Monitor - Magic in the kitchen: instant mayo: A kitchen experiment ends in delicious success.

1 organic egg
1/2 teaspoon prepared mustard
A dash of cayenne, chili powder, or even paprika
1/2 teaspoon salt
1/2 teaspoon sugar
1/2 cup plus 2 tablespoons cooking oil, divided
1-1/2 tablespoons lemon or lime juice

Put first 5 ingredients plus 2 tablespoons oil in a blender and mix well. Remove the center portion of the blender lid and slowly pour in 1/4 cup oil and then lemon or lime juice. At this point, you may need to stir the mixture with a spatula – but turn off the blender first! Add another 1/4 cup oil, blend, and stir again as needed. Store unused portion in the refrigerator and use within 2 days.