Jbl137 is right. There is nothing like Duke's mayo, but if you're transplanted in other parts of the country, you have to improvise. I use Hellman's and I think it's a good substitution. My deviled eggs are made using yellow mustard and mayo, and I sprinkle paprika on top. When I make egg salad for sandwhiches, aka deviled egg sandwiches, I make it with the same ingredients, or sometimes I make a variation with mayo and sweet relish.