Questions About This Product
The things people actually want to know before they cook with it.
Is the US Kewpie the same as the Kewpie sold in Japan?
They are closely related but not identical. The bottle sold in the US is produced in California for the US market, and the Japanese domestic product is made in Japan to a formula tuned for that market, with differences reported in the oil used and the sweetening. Food writers who have compared them describe the Japanese original as richer and more intensely umami, while the US version reads slightly milder. Some of the online comparisons are outdated, so the label on the bottle in front of you is the reliable source.
Does the US version contain MSG, or was it removed?
A lot of articles claim the American formula drops MSG in favor of yeast extract, but the current 12 fl oz US bottle from Kewpie lists monosodium glutamate directly in its ingredients. If you are shopping specifically for or against MSG, read the panel on the bottle rather than relying on those comparison pieces, since formulations have changed over time and Kewpie sells several different mayonnaise products in the US.
Why is Kewpie richer and more yellow than American mayonnaise?
Kewpie is made with egg yolks only rather than whole eggs, which is the main structural difference from Hellmann's or Duke's; the company states its mayonnaise contains four egg yolks per 500 grams. That gives it a deeper color, a heavier mouthfeel and a savory note from the amino acids in the yolk. It is also seasoned with a vinegar blend rather than a single distilled vinegar, which is where the tangy, slightly sweet edge comes from.
What is the star-shaped tip on the red cap for?
The cap has two openings: a narrow tip for a fine line, and a wider star-shaped nozzle that lays down a ridged ribbon. The star tip is what produces the lattice pattern you see on okonomiyaki, takoyaki and Japanese-style potato salad, since the ridges catch the light and hold their shape. Most bottles let you remove or swap the nozzle depending on which you want.
Why does the bottle feel different from other mayo bottles?
Kewpie uses a multi-layer plastic bottle engineered to block oxygen, because oxidation of the oil is what dulls mayonnaise flavor over time. That construction is why the bottle is soft enough to squeeze precisely but noticeably less permeable than a standard condiment bottle. It is a packaging design choice rather than anything about the recipe.
Why do imported Japanese Kewpie bottles come wrapped in a clear plastic sleeve?
The Japanese domestic bottle ships inside a clear outer bag, which serves as protective and hygienic overwrap and lets the bottle itself stay soft and squeezable. The US bottle skips that sleeve and uses different labeling, so an unwrapped bottle is not a sign of a counterfeit or a repack. Packaging alone is one of the quickest ways to tell which market a bottle was made for.
Is this bottle certified kosher and gluten free?
Kewpie states that the US-produced mayonnaise is certified gluten free and certified kosher, and that it is made in California. It also markets the product as containing no artificial colors or flavors. Certification marks are printed on the package, so check the bottle if a specific certifying body matters to you.
Can I just use regular mayonnaise in a recipe that calls for Kewpie?
You can, but the result will be thinner in flavor and less tangy. A common workaround is to whisk regular mayonnaise with a small amount of rice vinegar and a pinch of sugar, and some cooks add a little MSG, to approximate the yolk-forward, vinegar-sharp profile. That substitution works fine in dressings and dips; it is less convincing where Kewpie is the main flavor, as in a simple sushi or tamago sando.
Does it hold up to heat, or should it only be used cold?
It is used both ways in Japanese cooking. Cold, it goes on sandwiches, potato salad, sushi rolls and as a dip base; hot, it is squeezed over okonomiyaki and takoyaki and brushed onto things headed under a broiler, where it browns and adds richness. Like any emulsion it can break if you hold it at high heat for long, so add it near the end or let residual heat do the work.
How does this differ from Kewpie's spicy mayo and its other sauces?
Kewpie sells a range in the US beyond the plain mayonnaise, including a sriracha-based spicy mayo and various dressings such as their sesame dressing. The red-cap mayonnaise in the squeeze bottle is the plain original and the one recipes mean when they say Kewpie mayo. If a recipe calls for spicy mayo, you can either buy their version or mix the plain mayonnaise with sriracha to your own ratio.
What size is this bottle compared to the imported Japanese one?
This one is labeled 12 fl oz, about 355 ml. The most commonly imported Japanese bottles are sold by weight at 450 g and 500 g, so an imported bottle is typically larger than this one even though the two look similar on a shelf. Comparing price per ounce rather than price per bottle is the only way to compare the two fairly.
Who is the Kewpie baby on the label?
The mascot comes from the Kewpie doll, a cherubic illustrated character created by American artist Rose O'Neill in 1909 that became a worldwide craze. Kewpie's founder, Toichiro Nakashima, launched the mayonnaise in Japan in 1925 and adopted the then-popular character as the brand's face. The logo has been redrawn over the years, and the US and Japanese packages do not use identical versions of it.