Fun Facts


Major ingredients are oil, egg yolk, and vinegar


The main ingredients of KEWPIE Mayonnaise is oil, egg, and vinegar.

KEWPIE Mayonnaise is the “egg yolk type”, which contains egg yolk instead of whole egg.

The secret of distinctively rich flavor is egg yolk.

“A superior product is only made from fine ingredients with quality”

When fine ingredients were hard to obtain because of World War II, Nakashima, the founder of Kewpie Corporation, decided to cease the production until he could get high quality ingredients suitable for KEWPIE Mayonnaise.

Nakashima’s strong will “we must not manufacture mayonnaise without high quality ingredients” is still alive today.

A strict standard is established and applied for each ingredient to deliver safe, secure and delicious KEWPIE Mayonnaise.



At the time of the delivery, skilled staff will inspect the freshness and quality. All aspects from hen’s feed to hygiene level of their environment are checked and assured periodically by designated suppliers. Egg yolks used in production are sterilized.

Vegetable oil


Samples are inspected beforehand, and only the ones that cleared the test are delivered. Oil is stored in a tank in the factory, and sent to production line through pipes.



Vinegar is brewed by a group company to create the most suitable ingredient for making mayonnaise. Sensuous inspection is conducted to check flavor, color and aroma, etc, and chemical inspection is done for total acid, extract component, glucide, etc. Accredited vinegar is sent from tank to production line through pipes.

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