Make Restaurant-Quality Kewpie Mayo at Home

Separate the egg yolk from the egg white.

Add the yolk, vinegar, sugar, and salt to a jar.

Blend with an immersion blender until thick and pale yellow.

Slowly drizzle in oil while blending continuously.

Blend until the mixture is thick and emulsified.

Stir in lemon juice and Dijon mustard.

Taste and adjust seasonings as needed.

Transfer to a container and store in the refrigerator.

Enjoy your homemade Kewpie mayo within 4 days!