My Mom taught me how to make these, her secret was the sauce. She used it for these as well as coleslaw and potato salad. I think it is the sugar that makes the eggs slightly sweet. This last Easter, my sister-in-law and I both made deviled eggs and I have to say, that mine won! I don't think I ever have had sweet ones anywhere else. And here is my secret....I eat 2 eggs worth of the whites, while I am making them that makes the other eggs really full.