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On October 7th Hellmann’s tweeted “Mayo in your coffee.” and it’s been trending on Tik Tok.

Hellmanns on Twitter - Coffee Mayonnaise Recipe
Screenshot of Hellmann’s sweet from

It reminded me of when people thought putting butter in coffee was crazy. I thought both trends were not me. 10 years later I love butter in my coffee, so I had to try mayo in my coffee.

When I first tried butter in my coffee I made a rookie mistake and did NOT blend the two together. After starting a keto diet, I soon realized that it’s 100% a lot better when you blend the two together. So this time with the mayo coffee trend, I blended the two ingredients together.

After doing some research I saw that 10 years ago, someone on Reddit asked if others added mayo to their coffee. Crazy how this was mentioned then.

redit question of Does anyone else put mayonnaise in their coffee - Coffee Mayonnaise Recipe
This is a screenshot from October 10, 2021.

The verdict? It wasn’t terrible at all. It gives a slight flavor of the mayo. So if you don’t like mayo, you may not enjoy this trend. However, give a shot.

Jump to:


3 720x720 - Coffee Mayonnaise Recipe

Yield: 1

Cook Time: 2 minutes

Total Time: 2 minutes

A new way to get a fatty coffee in the morning. Just add some mayo and blend to create a smooth consistency.


  • 1 Cup of hot coffee
  • 1 Tablespoon of Mayonnaise
  • Milk frother or blender


  1. Prepare your coffee as you normally would.
  2. Add in your tablespoon of mayo.
  3. Blend the coffee and mayo together. I love using my handheld frother or you can use a small blender.


Read substitutions for the mayo below this recipe and which mayo is best for your hearthealth.

Nutrition Information:

Yield: 1 Serving Size: 1
Amount Per Serving: Calories: 90Total Fat: 10g

Best Mayonnaise for Health

The best mayo for your health is when it uses all avocado oil. Primal Kitchen has mayo like this.

Your typical mayo at the store will mostly use vegetable and soybean oil. Some brands have started to use olive oil as well. However, if you see if the mayo says it uses olive oil, you will also see that it also uses soybean or vegetable oil with it.

As a general rule, we do not want to consume a lot of vegetable and soybean oils due to their omega 6 fat content. Omega 6 is fine but when someone consumes too much of it, like most Americans, it tends to lead to health problems. (source)

Olive oil is a better oil to consume compared to a bunch of soybean oil or vegetable oil. Avocado oil is also great with its being full of monosaturated fats. (source)

A typical formulation for commercially made mayonnaise (not low fat) can contain as much as 80% vegetable oil, usually soybean but sometimes olive oil. Water makes up about 7% to 8% and egg yolks about 6%. Some formulas use whole eggs instead of just yolks.

mayo coffee 1024x1024 - Coffee Mayonnaise Recipe
The ingredients for the fatty mayo coffee.

Additions or Substitutions

If you don’t like mayo in the coffee on its own, try adding in some heavy whipping cream as well. I found that I enjoyed the coffee more when a tablespoon of heavy cream was added.

Other Fats to Add-In or to Replace the Mayo With

  • MCT Oil (If you never had MCT oil before start with only 1/2-1 teaspoon.)
  • Coconut Oil
  • Butter
  • Cacao Butter (this provides a white chocolate taste)

My Favorite Milk Frother

I absolutely love the milk frother from Zuley Kitchen. Since I enjoy this wand so much, I have a discount code for you all to use on their site. Use Code KKN10 and you will get 10% off. Just use the link in the brand name.

More Keto Coffee Recipes