Skip to main content
Raine Square · Perth CBD
Back to Blog
Japanese Food
3 min read

Kewpie Mayo: The Secret Weapon of Japanese Cuisine

Why is Japanese mayonnaise so much better than the Western version? It comes down to eggs, umami, and a very specific recipe.

Kewpie Mayo: The Secret Weapon of Japanese Cuisine

Not Your Average Mayo

If you've eaten at a Japanese restaurant and noticed the mayonnaise tastes different — richer, more savoury, almost addictive — that's Kewpie mayo. It's the secret weapon of Japanese cuisine, and we use it across several dishes at Teriyaki Express.

What Makes Kewpie Different?

Western mayonnaise uses whole eggs, neutral oil, and vinegar. Kewpie mayo uses:

  • Egg yolks only — not whole eggs — giving it a richer, creamier texture and a golden colour
  • Rice vinegar or apple cider vinegar — milder and slightly sweeter than white vinegar
  • MSG — yes, monosodium glutamate. It's what gives Kewpie its addictive umami depth
  • A touch of mustard — for a subtle sharpness

The result is a mayonnaise that's thicker, richer, and more flavourful than anything you'll find in an Australian supermarket. It's the mayonnaise that makes Japanese food taste... Japanese.

Where We Use It

At Teriyaki Express, Kewpie mayo features in:

  • Chicken Katsu Donburi — alongside house BBQ sauce
  • Chicken Karaage Donburi — with house BBQ sauce
  • Fish Katsu Donburi — with house BBQ sauce
  • Chicken Katsu Bento and Karaage Bento — in the same combinations

The interplay between the crispy katsu or karaage, the sweet-savoury BBQ sauce, and the creamy umami Kewpie is what makes these dishes so satisfying. Remove any one element and the balance falls apart.

Why MSG Isn't the Enemy

Kewpie's use of MSG is sometimes cited as a negative, but MSG is simply a flavour enhancer that occurs naturally in tomatoes, cheese, and mushrooms. It's what gives Kewpie its savoury depth, and it's a cornerstone of Japanese cooking. Japanese cooks have used kombu (kelp, naturally rich in MSG) for centuries to add umami to their dishes.

Try It for Yourself

The best way to understand Kewpie mayo is to taste it in context. Order any of our katsu or karaage dishes and you'll experience the magic — creamy, savoury, crispy, and deeply satisfying.

Order katsu or karaage with Kewpie mayo.

Kewpie mayoJapanese mayonnaiseJapanese mayo vs regularumami mayonnaise

Planning a meeting?

Office Catering for Perth CBD 6000

Plan Catering
TERIYAKI
EXPRESS · PERTH

Local Japanese restaurant and office catering from Raine Square. Individually packed bowls, sushi platters, pickup and Perth CBD delivery.

Find Us

Raine Square Food Court
515 Wellington Street, Perth WA 6000
Monday–Friday: 9am–6pm
Saturday–Sunday: 10am–4pm

© 2026 Teriyaki Express. All rights reserved.

おいしい · Oishii · Delicious