Japanese Mayonnaise: Why Kewpie Has Such Devoted Fans

Find out why Kewpie, Japan's best-loved mayonnaise, tastes so rich, how it began in 1925, and the fun ways to use it in Japanese cooking.

Published October 17, 2026 at 8:12 PM JST | By Tokyo Paul

Quick answer: Kewpie is Japan's best-known mayonnaise, launched in 1925 as a rich mayonnaise made with egg yolks only. Its tangy, savory flavor comes from yolks, a vinegar blend of apple and malt, and a touch of seasoning. It is sold in soft squeeze bottles.

The Squeeze Bottle That Won Hearts

Walk into any Japanese supermarket and you will spot it within seconds: a soft plastic bottle with a red cap and a smiling baby figure on the label. That is Kewpie mayonnaise, and in Japan it is as ordinary and beloved as ketchup is elsewhere. Travelers often discover it on okonomiyaki, takoyaki or a humble egg sandwich, then carry a bottle home in their luggage. Interest in Japanese pantry staples keeps growing, and Kewpie is often the first one people want to understand. This guide looks at its story, what makes the flavor so distinctive, and how to enjoy it like a local.

The short version is that Japanese mayonnaise tastes richer, tangier and a little more savory than many Western versions. The longer version is a charming mix of company history, ingredient choices and a very Japanese habit of putting a sauce on almost everything.

A Story That Began in 1925

The company behind Kewpie traces its roots to Shokuhin Kogyo, a food maker established in 1919 in what is now Nakano Ward in Tokyo. Founder Toichiro Nakashima is credited with bringing mayonnaise to Japanese kitchens, and the product was launched in 1925 as a highly nutritious mayonnaise made using only egg yolks. At that time mayonnaise was barely known in Japan, so introducing it was a bold move. The firm later grew into the Kewpie Corporation, and the mayonnaise became its flagship product.

The name comes from the Kewpie doll, a character created by the American illustrator Rose O'Neill in the early twentieth century, whose name is derived from Cupid. The doll's cherubic look proved so popular that it became the brand emblem, and the little figure remains one of the most recognizable logos on Japanese shelves. Over the decades the character has appeared on packaging, in advertising and in all kinds of collectible goods.

The company's founder had spent time in the United States, where he first encountered mayonnaise and the Kewpie doll, and he reportedly wanted to make vegetables more enjoyable to eat in Japan. That idea still fits the way the sauce is used, since it is a natural partner for raw cabbage, boiled vegetables and simple salads. The firm describes a quality-first approach, and after the Second World War it resumed production in 1948 once reliable ingredient supplies returned. Using only yolks left plenty of egg whites, which encouraged the company to develop other uses for eggs and eventually build an egg-processing business.

What Makes the Flavor Different

Fans point to a few details that set Japanese mayonnaise apart. The first is the egg: Kewpie has long been associated with egg yolks rather than whole eggs, which gives a creamy texture and a deeper, richer taste. The second is the vinegar. Japanese mayonnaise is typically made with rice vinegar, and Kewpie uses its own blend, with a vinegar fermented from apple juice and malt. The result is a gentle tang that feels rounder than the sharp bite of distilled vinegar.

Seasoning plays a part as well. Kewpie includes monosodium glutamate, a common umami ingredient in Japanese cooking, alongside salt and spices. That extra savory note is part of why the sauce tastes so satisfying on simple foods. Its packaging also adds to the fun, since the soft bottle lets you squeeze fine lines of mayonnaise over a dish, a look that is easy to recognize on okonomiyaki and salads.

The vinegar has its own story. The company ferments vinegar from apple juice and malt, and it set up a separate subsidiary in 1962 to make vinegar for its mayonnaise. Controlling this part of the process helps keep the tang consistent from bottle to bottle, which is one reason fans say the taste feels so reliable. Together, the yolks, the vinegar and the gentle seasoning explain why a spoonful tastes plush and bright at the same time.

Where Mayo Shows Up in Japanese Food

Mayonnaise plays a bigger role in Japanese casual cooking than many visitors expect. It is drizzled on okonomiyaki, the savory cabbage pancake, and on takoyaki, the octopus balls from Osaka, usually alongside a dark sweet sauce. It appears on yakisoba, katsu and karaage, and it dresses potato salad as well. Bakery counters sell sandwiches filled with egg salad or tuna and corn, while convenience stores stock onigiri rice balls with tuna mayo inside.

Home cooks stretch it further. A little mayonnaise mixed with soy sauce makes a quick dip for vegetables, and some people mix it with wasabi for a zippy sauce. Because the flavor is bold, a small amount goes a long way. The sauce is also a common companion to salads, where it softens crisp cabbage and cucumber, and it can turn a simple plate of toast into a comforting breakfast.

Tips for Trying and Buying It

If you want to taste it in context, look for casual spots serving okonomiyaki, takoyaki or sandwiches, where the mayonnaise is part of the charm. Supermarkets and convenience stores sell squeeze bottles in several sizes, and you may also find lower-fat versions and flavored varieties. Check the packaging for the product name and the best-before date, and keep in mind that airlines and customs rules vary on liquids and food items, so it is worth reading the current guidelines for your route before packing a bottle in carry-on luggage.

Once you are home, store the bottle as the label directs, and use clean utensils when you open a larger jar. Kewpie also produces other dressings and sauces, such as sesame dressing, which are fun to sample if you like the brand. For a quick experiment, try a spoonful with warm roasted potatoes or stirred into a simple egg filling for a sandwich. The aim is not to follow a strict recipe but to notice how the sauce brings out the savory side of ordinary ingredients.

Quick Takeaways

Kewpie mayonnaise began in 1925 under founder Toichiro Nakashima and takes its name and logo from the Kewpie doll. Its celebrated flavor comes from an egg yolk focused recipe, a rice and apple based vinegar blend and a touch of umami seasoning. Soft squeeze bottles make it easy to dress okonomiyaki, takoyaki, salads and sandwiches with a fine drizzle.

For visitors, the easiest approach is simply to taste it on the foods where it already belongs. Try a few dishes, compare it with the mayonnaise you know, and enjoy the little cultural surprise that a humble condiment can carry so much character. A bottle also makes a cheerful, practical souvenir for friends who love to cook.

Frequently Asked Questions

When did Kewpie mayonnaise start?

Kewpie mayonnaise launched in 1925, made by a company founded in 1919 in Tokyo. At that time mayonnaise was barely known in Japan, so the product introduced many people to the sauce. The company was founded in 1919.

Why does Japanese mayonnaise taste different?

It is associated with egg yolks rather than whole eggs, which gives a richer texture. Rice vinegar or a blend of apple and malt vinegar adds a rounder tang, and seasoning adds an umami note. The yolk focus gives a plush, creamy texture.

What foods go well with Kewpie?

It is commonly used on okonomiyaki, takoyaki, yakisoba, katsu and karaage. It is also popular in sandwiches, salads and rice balls with tuna filling. It also works as a simple dip for vegetables. Bakeries and convenience stores use it too.

Keep Exploring

More guides from Tokyo Paul: Ponzu and Friends: A Guide to Japan's Everyday Sauces, Shichimi Togarashi and Sansho: Japan's Gentle Spice Shelf and Katsuobushi: The Dancing Flakes of Smoked Bonito.