Gather all the ingredients.
Japanese Mayonnaise: It will not be exactly the same, as it completely lacks the rich egg yolk flavors, but this is the closest substitution that I could come up with.
For 1 cup of American mayonnaise (I use Best Foods/Hellmann’s Mayonnaise), add 2 Tbsp rice vinegar and 1 Tbsp sugar. And whisk until sugar dissolves.
For 1 Tbsp of American mayonnaise, add 1/2 tsp rice vinegar and 1/8 tsp sugar. And whisk until sugar dissolves.
Recipe by Namiko Chen of Just One Cookbook. All images and content on this site are copyright protected. Please do not use my images without my permission. If you’d like to share this recipe on your site, please re-write the recipe and link to this post as the original source. Thank you.