I read where Duke’s contains a higher ratio of egg yolks than most other commercial mayos, making it richer and creamier.
There’s also hints of tang from vinegar and a touch of paprika.....so they say.
It is why Southern cooking continues to please.
Grew up in the Chicago area with Hellmann’s.
When I moved to the DC area I noticed Dukes on sale one day. Bought it. Did a side by side taste test with Hellmann’s.
Dukes won biggly!
(Still use Miracle Whip in recipes I got from my Grandma’s)