Duke’s Mayo vs. Other Mayo: What’s the Difference

If you grew up in the South, there’s a decent chance you have strong feelings about mayonnaise. Not the abstract idea of it, but the specific jar. Duke’s people are Duke’s people, and they will tell you so, usually before you’ve finished asking. And if you’ve been following this site for any length of time, you know that I’m pretty firmly in the Duke’s camp.

But what actually separates one mayonnaise from another? Some of it is a real, measurable difference, and some of it is plain loyalty. So let’s sort out both: what legally counts as mayonnaise, where Duke’s came from, and why the big brands taste the way they do. By the time we’re done, you’ll know which jar to grab and why.

What makes mayonnaise mayonnaise

At its core, mayonnaise is a simple thing. It’s an emulsion of oil, egg, and an acid, usually vinegar or lemon juice, beaten together until it’s thick, smooth, and pale. The egg yolk is the emulsifier, the ingredient that keeps the oil and acid combined instead of separating back out.

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Here’s the part most people don’t think about: “mayonnaise” is also a legal term. The FDA sets a standard of identity for it, which means a product has to meet certain requirements before it can use the term on the label. The big one is fat. Mayonnaise must contain at least 65 percent vegetable oil by weight, plus egg and an acidifying ingredient. That sounds like a technicality, but it’s the reason one very popular jar on the shelf isn’t allowed to use the word at all. I’ll get to that one.

Where Duke’s came from

Duke’s goes back to Eugenia Duke in Greenville, South Carolina. During World War I, she made and sold sandwiches to soldiers stationed at nearby Camp Sevier, and her mayonnaise was part of what kept people coming back. The sandwiches did well enough that eventually the mayonnaise became the whole business.

(Note: I have participated in a culinary history tour in Greenville that included a talk about Duke’s. Absolutely my favorite food history tour, and I highly recommend it. This is not an affiliate link, I just really enjoyed this experience.)

In 1929, the brand was sold to the C.F. Sauer Company, the Richmond spice maker, which held onto it until 2019, when the company was acquired by Falfurrias Capital Partners of Charlotte, North Carolina. Fortunately for all of us Duke’s mayo lovers, the new owners grew up on Duke’s mayonnaise and say they are loyal to the brand. I’m hoping they won’t start making corporate changes!

For a long time, Duke’s was a regional product, hard to find outside the Southeast, which is a big part of why people treated it like a treasure. Southerners who moved away used to have family mail them jars. You can find it almost anywhere now, but the loyalty never faded.

Why Duke’s mayo tastes different

The thing Duke’s fans always bring up is the tang. It’s sharper and more savory than most national brands, and there’s a reason for it: there’s no added sugar or corn syrup. Mayonnaise with sugar tastes sweeter and milder. Duke’s is slightly tart and tangy instead.

Duke’s also uses a higher share of egg yolks than some of its competitors, which gives it more body and helps it hold together when you cook or bake with it. That creamy richness is why so many Southern cooks won’t use anything else.

If you’ve only ever used a sweeter mayonnaise, the first taste of Duke’s off a spoon can catch you off guard. But once you start adding it to your favorite recipes, you might just understand the cult following.

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Hellmann’s and the national brands

Hellmann’s, sold as Best Foods out west, is the most popular mayonnaise in the country, and it’s a good product. It’s a touch sweeter than Duke’s, with a milder flavor, which is why a lot of people prefer it.

Which one you use depends on the dish. When you want to taste the mayonnaise, like on a tomato sandwich, Duke’s tang is what you need. When it’s just there to bind things, a milder brand is fine. Most Southern cooks I know keep Duke’s and reach for it first, but neither choice is wrong. (Well, actually, a lot of Southern grandmas, myself included, would tell you that any choice other than Duke’s is wrong, but I’m trying to give you options here!)

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Why Miracle Whip isn’t mayo

Now back to that FDA rule. Miracle Whip can’t legally be called mayonnaise, so the label calls it a “dressing.” It has less oil than the standard requires and more sugar, plus a blend of spices that gives it a sweet, tangy flavor that’s nothing like plain mayonnaise.

This isn’t a dig at Miracle Whip. Plenty of people grew up on it and love it, and in some recipes that sweetness is exactly what you’re after. As a matter of fact, my first husband loved Miracle Whip and wouldn’t eat any other mayonnaise. I’m not saying that’s the reason we’re not still married, but I’m also not saying it’s not the reason why we’re not still married. 🤪

If a recipe calls for mayonnaise and you swap in Miracle Whip, the result comes out sweeter and softer. They aren’t interchangeable, so it helps to know which one the recipe calls for before you start.

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Which one to use and where

For all my Southern cooking that calls for mayonnaise, I reach for Duke’s, especially in dishes where it adds a lot of flavor. It’s just my personal preference, and I never even buy anything else. Nothing else would do in this Southern classic Pear Salad for sure.

Old-fashioned Southern Pear Salad

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Southern pear salad is canned pear halves topped with mayonnaise, grated Cheddar, and a cherry, placed on lettuce leaves.

Duke’s is the backbone of good Pimento Cheese, which is my most requested appetizer. It’s also the binder in Deviled Eggs and Southern Potato Salad, and it’s what makes a proper summer tomato sandwich or a BLT worth the mess. I can’t imagine my Chicken Salad without the perfect mayonnaise to enhance its flavor.

For baking or any dish where you don’t need the mayonnaise to shine, either Duke’s or a national brand works fine. The short version: real mayonnaise is oil, egg, and acid in legal proportions. Duke’s skips the sugar and turns up the tang; the national brands stay mild, and Miracle Whip is a sweeter dressing that sits in its own category. Keep a jar of whatever you love, and now you’ll know which one to reach for and why.