Key takeaways:
Mayonnaise is made from oil, eggs, and vinegar. Most mayonnaise is made with soybean oil. But you can also buy mayonnaise made with olive oil or avocado oil.
Mayonnaise contains some healthful unsaturated fats that can benefit your health. But mayonnaise is high in both calories and fat, so it’s best to use it sparingly.
Some people think mayo can cause salmonella, since it’s made with raw eggs. But store-bought mayonnaise is made with pasteurized eggs. The pasteurization process destroys salmonella bacteria.
Mayonnaise is the number one best-selling condiment in the U.S. It’s creamy, tangy, and versatile. People enjoy it on sandwiches, in dressings, and dips. Some people add it to recipes like mashed potatoes or scrambled eggs. You can even use it to make the moistest chocolate cake you’ll ever try.
But you might be wondering: Is mayonnaise bad for you? And since mayonnaise’s ingredients include raw eggs, is it always safe to eat? If mayonnaise is a bit of a mystery for you, you’re not alone. Let’s take a look at all things mayonnaise to learn the facts.
Mayonnaise is made of soybean oil, vinegar, and egg yolks. It may also contain salt, sugar, and spices such as mustard powder or paprika. Some types of mayonnaise use olive oil or avocado oil instead of or in addition to the soybean oil.
The ingredients in mayonnaise are mixed to create an emulsion. This is when ingredients blend together and don’t separate. But if you’ve ever mixed oil and vinegar, you know that they don’t combine well. In mayonnaise, egg yolks are the ingredient that bring it all together.
You can also buy egg-free mayonnaise. Instead of using egg yolks as emulsifiers, egg-free mayonnaise usually uses some combination of:
Mustard
Food starch made from potato, corn, or wheat
Tips for eating fewer processed foods: It’s not realistic to avoid processed food altogether. But cutting back with a few small changes can improve your health.
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Below is the nutrition information for different popular brands of mayonnaise (per 1 tbsp).
Calories (kcal) | Fat (g) | Protein (g) | Carbs (g) | Sodium (mg) | |
*Hellmann’s Regular Mayonnaise | 90 | 10 | 0 | 0 | 90 |
Duke’s Real Mayonnaise | 100 | 12 | 0 | 0 | 70 |
Hellmann’s Light Mayonnaise | 35 | 3.5 | 0 | 1 | 110 |
Chosen Foods Avocado Oil Mayonnaise | 90 | 10 | 0 | 0 | 45 |
Spectrum Olive Oil Mayonnaise | 100 | 11 | 0 | 0 | 90 |
Hellmann’s Avocado Oil Mayonnaise | 60 | 7 | 0 | 1 | 110 |
Hellmann’s Olive Oil Mayonnaise | 60 | 6 | 0 | 1 | 125 |
Hellmann’s Vegan Mayonnaise | 70 | 8 | 1 | 1 | 100 |
* Hellmann’s is called Best Foods in some parts of the U.S.
Mayonnaise can be part of a balanced and nutritious diet. The oils in mayonnaise — such as soybean, olive, and avocado oils — contain monounsaturated and polyunsaturated fats. These are considered healthy fats. The American Heart Association (AHA) says that lowering intake of dietary saturated fat (like butter) and replacing it with polyunsaturated oils helps reduce the risk of cardiovascular disease.
But keep in mind that regular mayonnaise contains high amounts of both calories and fat, so keep an eye on how much of it you use. A standard serving size is 1 tbsp.
Some people have concerns about the raw egg yolks in mayonnaise. This is because eggs can contain salmonella, a foodborne pathogen that can cause stomach cramps, diarrhea, and fever if ingested. But mayonnaise uses pasteurized eggs. Pasteurization is a heat treatment process that kills harmful bacteria like salmonella. So mayonnaise that you buy from the store is safe to eat. If you make mayonnaise from scratch at home, use pasteurized eggs to be safe.
The best mayonnaise to choose may be regular mayonnaise made from pasteurized eggs, oil, and vinegar. This is the least processed version, since it’s just a combination of whole-food ingredients.
Some mayonnaises are marketed as being more “health-conscious.” But it’s important to note that these mayonnaises aren’t necessarily better for you. Some lower-calorie options (like light mayo, or those made with olive oil or avocado oil) use water instead of oil as the first ingredient. This reduces calories and fat. But these options usually contain more processed ingredients. When manufacturers reduce fat and oil, they often replace them with sugar, salt, gums, and thickeners, such as food starch.
Not necessarily. Miracle Whip looks like mayonnaise and is packaged similarly, but it isn’t the same thing. Miracle Whip has the same base ingredients as mayo (eggs, oil, and vinegar). But it uses less oil. It also contains modified cornstarch as a thickener, added sugar in the form of high fructose corn syrup (HFCS), and spices. As a result, it tastes sweeter and tangier than mayonnaise.
So, while Miracle Whip has less fat and calories than mayonnaise, it’s considered less healthful because of its additives. For example, HFCS is linked to high cholesterol and obesity.
Note that the FDA considers Miracle Whip to be a dressing, not a mayonnaise.
If you aren’t a fan of mayonnaise, try swapping it out for one of these alternatives:
Tzatziki (yogurt spread)
Hummus (chickpea spread)
Yellow or dijon mustard
Greek yogurt
Pesto
Guacamole
Tahini (sesame seed paste)
Cashew butter
Yes, mayonnaise can go bad. After opening a jar of mayonnaise, you can refrigerate it for up to 2 months. If you’re preparing sandwiches, potato salad, or other mayo-based recipes, pay attention to how long the food is left out. Dispose of anything left out longer than 2 hours at room temperature. If your mayo-based food is outdoors or in a particularly warm environment, discard it after 1 hour. (This is the rule for all perishable food, not just foods with mayo.)
Mayonnaise is dairy free if it’s made using the traditional recipe of oil, vinegar, and egg yolks. Some people mistakenly think that eggs and dairy are the same thing. But a food is only considered dairy if it comes from cows. Mayonnaise doesn’t usually contain dairy ingredients, such as milk or cream.
Mayonnaise is gluten free when made using the traditional recipe of oil, egg yolks, and vinegar. A light or vegan mayo can contain food starch, which may contain wheat. Read ingredients lists to know for sure.
Whether it’s mixed into a potato salad, spread on a ham and cheese sandwich, or used in a dip, mayonnaise can be part of a balanced diet. While it’s high in both fat and calories, its fat is unsaturated, which has some benefits for your health. Just try to eat mayonnaise in moderation. And choose types with simple, whole-food ingredients (oil, egg, and vinegar) to avoid unnecessary additives.
Chetana, R., et al. (2019). Studies on eggless mayonnaise from rice bran and sesame oils. Journal of Food Science and Technology.
FoodSafety.gov. (n.d.). Salmonella and eggs.
Moeller, S. M., et al. (2009). The effects of high fructose syrup. Journal of the American College of Nutrition.
MyFoodData. (n.d.). Best Foods - Olive oil mayonnaise dressing.
MyFoodData. (n.d.). Chosen Foods - Mayo avocado oil.
MyFoodData. (n.d.). Dukes Real mayonnaise.
MyFoodData. (n.d.). Hellmann’s - Avocado oil mayonnaise dressing, avocado oil.
MyFoodData. (n.d.). Hellmann’s - Light mayonnaise.
MyFoodData. (n.d.). Hellmann’s - Real mayonnaise.
MyFoodData. (n.d.). Miracle Whip - Dressing.
MyFoodData. (n.d.). Spectrum Culinary - Organic with extra virgin olive oil mayonnaise.
MyFoodData. (n.d.). Vegan mayo.
Sacks, F. M., et al. (2017). Dietary fats and cardiovascular disease: A presidential advisory from the American Heart Association. Circulation.