Ozoni

Ozoni (お雑煮, おぞうに) is the mochi soup Japanese families eat on the morning of January 1 and through the first three days of the New Year. The name means a simmer of mixed things. Its broth splits the country in two: a clear soy broth with grilled square mochi around Tokyo, and white miso with soft round mochi in Kyoto.

A Bowl Before Anything Else

On the first morning of the year the kitchen is almost idle. The tiered boxes of osechi were packed days ago and sit cold on the table. There is exactly one thing left to cook, and it is soup.

The dashi goes on. Someone toasts the mochi until it puffs and splits, or drops round cakes into hot water until they slump. A few pieces of chicken, a green leaf, a slice of pink and white kamaboko, a curl of yuzu peel. The good lacquer bowls come out, and nobody touches the boxes until the soup has been served.

Ask any two Japanese people what goes into it and you will get two answers, both delivered with total confidence. That is the most reliable fact about ozoni. It is one dish in name and hundreds in practice, and each version tastes, to the person who grew up with it, like the only correct one.

“Osechi is what the New Year looks like. Ozoni is what it tastes like at home.”

What Ozoni Means

Zōni (雑煮) joins two characters: zō (雑), mixed, and ni (煮), to simmer. The o is the polite prefix. The Nihon Daihyakka Zensho encyclopedia glosses the name as a jumble-simmer, a pot of several ingredients cooked together with mochi added.

The idea underneath is older than the dish. Food offered to the kami is not thrown away after the rite. It is taken down and shared in a meal called naorai (直会), and the encyclopedia traces ozoni to exactly that: eating the offerings made to the toshigami (年神), the deity of the new year. Nippon.com describes the mochi the same way, as rice cakes placed on the household altar for the toshigami and simmered on New Year’s morning.

One early written description is Portuguese. The Nippo Jisho (日葡辞書), a Japanese-Portuguese dictionary published in 1603, defines zōni as a kind of stew of mochi and vegetables served at New Year. According to the Japan Kagami Mochi Association, eating it on New Year’s Day became a custom among ordinary townspeople after the Genroku era, around 1700, and the regional styles grew apart from there.

There was a deeper reason for the date. Under the old way of counting age, everyone turned a year older together at New Year, and the folklorist Shintani Takanori, writing in the government’s Highlighting Japan magazine, describes the New Year’s Day ozoni as the meal that celebrated that added year, a kind of rebirth. Even the chopsticks are specific: round willow sticks, thick in the middle and tapered at both ends.

Kanto vs Kansai: Square or Round, Clear or Miso

Every regional argument about ozoni comes down to two questions: what shape is the mochi, and what is the broth.

On shape, the line is sharp. Eastern Japan uses rectangular mochi and western Japan round mochi, and Nippon.com places the dividing line around Sekigahara in Gifu Prefecture, the site of the battle of 1600. The usual explanation is practical: as Edo grew, a slab of mochi cut into blocks was quicker to make and easier to transport than cakes rolled one by one. Kōchi and Kagoshima are western exceptions with square mochi, which their feudal lords are said to have brought home from Edo.

On broth, the map is messier. Kanto, Chūgoku and Kyūshū mostly use a clear soup of bonito dashi and soy sauce, while Kansai and Shikoku add white miso to a kombu dashi.

Tokyo did not always do it this way. The Ministry of Agriculture, Forestry and Fisheries notes that Edo once made a miso ozoni like Kyoto’s. In the Genroku era soy sauce brewing took off in Noda and Chōshi, in present-day Chiba, and Edo’s taste for dark soy sauce produced the clear version still eaten today. The Nihon Daihyakka Zensho adds a less practical theory: warriors avoided miso because miso o tsukeru, to smear on miso, is an idiom for making a blunder.

In Kyoto the round mochi is often boiled rather than grilled, the ministry explains, so that a toasted crust does not get in the way of the delicate white miso. Every ingredient carries a wish. Round mochi stands for harmony and long life. Kashira-imo (頭芋), the large parent taro, stands for prospering descendants and rising in the world. Daikon cut into rounds means harmony, and cut into tortoiseshell shapes, longevity.

Regional Ozoni Across Japan

East and west are only the two main families. Inside them almost every prefecture has its own version.

Kagawa’s is the one that startles visitors. The ministry’s profile of anmochi zōni describes bean-filled round mochi in white miso, with daikon cut into rings for family harmony and gold-coloured carrot. The sweetness has a history. In the Edo period Kagawa, the old province of Sanuki, grew sugarcane, and its white sugar was counted among the Sanuki sanpaku (讃岐三白), the three whites of Sanuki, with cotton and salt. Sugar was too precious for everyday cooking, so from the Meiji era families spent what they had saved on the New Year soup.

When Ozoni Is Eaten

Ozoni belongs to sanganichi (三が日), January 1 to 3, and above all to New Year’s morning. It is the one hot dish of the holiday, served next to the cold tiered boxes of osechi ryōri and alongside otoso (屠蘇), the spiced New Year sake.

The night before belongs to a different bowl. On New Year’s Eve families eat toshikoshi soba, long noodles that cut off the old year, and in the morning the soba gives way to mochi. Noodles to close the year, rice cakes to open it. The first shrine visit, hatsumōde, falls in the same three days.

The soup returns later in the season. On January 11 the stacked rice cake offering, the kagami mochi, is taken down and broken with a mallet, and the Japan Kagami Mochi Association lists ozoni and sweet shiruko as the two classic ways to eat the pieces. And the dish is loved, not merely endured. In a 2022 survey of 7,015 married women by the food maker Kibun Foods, reported by Nippon.com, ozoni was the favourite New Year food at 47.0%, ahead of sweet chestnut kinton at 40.2% and black soybeans at 36.8%.

Where the soup sits in the whole season, from the December clean to the bonfires of mid-January, is set out in the guide to Japanese New Year traditions.

How to Make Ozoni at Home

Both versions serve four. The quantities follow the home recipes published by the Japan Kagami Mochi Association.

Kanto style: clear broth, grilled square mochi

You need: 4 square mochi (kirimochi), 80 g chicken, 120 g komatsuna or spinach, a few slices of kamaboko, 3 cups (600 ml) kombu and bonito dashi, salt, soy sauce, nori or yuzu peel.

1. Slice the chicken thinly on the diagonal. Blanch the komatsuna, squeeze it dry and cut it into 5 cm lengths.
2. Bring the dashi to a simmer, add the chicken and cook it gently over low heat.
3. Season with salt and a little soy sauce. The broth should stay pale and clear.
4. Grill the mochi until it puffs up and browns lightly on both sides.
5. Put the mochi in each bowl with the komatsuna and warmed kamaboko, ladle the chicken and broth over, and finish with a strip of nori or yuzu peel.

Kansai style: white miso, round mochi

You need: 4 round mochi (marumochi), 100 g chicken, 4 small taro, 50 g each of carrot and daikon, 100 g komatsuna, 3 cups (600 ml) kombu dashi, 90 to 100 g white miso, yuzu peel.

1. Cut the daikon and carrot into rounds and the taro into bite-sized pieces, and parboil them until just tender. Blanch the komatsuna.
2. Slice the chicken thinly and blanch it briefly.
3. Warm the dashi, add the vegetables and chicken, and simmer for a few minutes.
4. Lower the heat and whisk in the white miso. Do not let it boil hard after this.
5. Soften the mochi in a separate pan of hot water, place it in the bowls with the vegetables, pour over the broth and add a sliver of yuzu.

Mochi Safety: The January Choking Warnings

Each winter the Tokyo Fire Department and the Consumer Affairs Agency repeat the same warning. Mochi is soft, elastic and sticky, and it can block the airway of anyone who struggles to chew or swallow.

The Tokyo Fire Department reports that 338 people in its area were taken to hospital by ambulance after choking on mochi and similar foods between 2020 and 2024, and more than 90% of them were aged 65 or over. January accounted for 135 of those cases and December for 42, together more than half. The Consumer Affairs Agency found that nearly half of mochi choking deaths among older people happen in January, with the first three days of the year standing out.

Their advice is simple:

• Cut the mochi into small pieces, especially for older relatives and small children.
• Moisten the throat first with a sip of tea or broth.
• Chew slowly and take small amounts at a time.
• Watch older and very young diners while they eat.
• Know what to do. If someone cannot speak, cough or breathe, call 119 in Japan, or your local emergency number, and begin back blows.

None of this is a reason to skip the soup. It is a reason to cut the mochi small and eat it slowly.

Sources

• Zōni: Japan's New Year Soul Food, Nippon.com toshigami offering, Sekigahara line, broth regions, Kibun Foods 2022 survey, regional versions
• Ozōni (Tokyo), Uchi no Kyōdo Ryōri, Ministry of Agriculture, Forestry and Fisheries grilled square mochi, clear broth, the Genroku soy sauce shift
• Shiro miso no zōni (Kyoto), Ministry of Agriculture, Forestry and Fisheries boiled round mochi, kashira-imo and daikon meanings
• Anmochi zōni (Kagawa), Ministry of Agriculture, Forestry and Fisheries bean-filled mochi, Sanuki sanpaku sugar
• Zōni around Japan, aff magazine, Ministry of Agriculture, Forestry and Fisheries the sweet red bean broth of San'in
• Zōni, Nihon Daihyakka Zensho via Kotobank name, naorai origin, willow chopsticks, Kanto and Kansai styles
• Uketsugareru ozōni, Japan Kagami Mochi Association the 1603 Nippo Jisho entry, Genroku spread, home recipes
• The Origins and Significance of Japan's New Year's Culture, Highlighting Japan, Government of Japan ozoni and the New Year of age
• Mochi choking accidents, Tokyo Fire Department 338 transports from 2020 to 2024, over 90% aged 65 and over
• Winter accidents among older people: mochi choking, Consumer Affairs Agency January deaths and prevention advice

FAQ

What is ozoni?

Ozoni (お雑煮) is a Japanese soup with mochi rice cakes in it, eaten at New Year, especially on the morning of January 1. The name means a simmer of mixed things. The broth, the mochi and the other ingredients change by region and by family.

What is the difference between Kanto and Kansai ozoni?

Kanto ozoni, the Tokyo style, is a clear dashi and soy broth with grilled square mochi. Kansai ozoni, the Kyoto style, is a white miso broth with round mochi that is usually boiled. The mochi shape changes around Sekigahara in Gifu Prefecture.

When do Japanese people eat ozoni?

On the mornings of January 1 to 3, with New Year’s Day the most important, alongside osechi ryōri. Many families make it again on January 11, when the kagami mochi offering is broken and eaten.

Why is ozoni eaten at New Year?

It began as a way of sharing the offerings made to the toshigami, the New Year deity. Under the old way of counting age, when everyone turned a year older at New Year, the bowl also marked that fresh start.

Is mochi in ozoni dangerous?

It can be, mainly for older people and small children. The Tokyo Fire Department recorded 338 ambulance transports for choking on mochi and similar foods from 2020 to 2024, more than 90% of them aged 65 or over. Cut it small, moisten the throat first and chew slowly.

Can I make ozoni outside Japan?

Yes. Packaged kirimochi is sold in many Asian grocers and keeps well. Make a kombu and bonito dashi, season it with soy sauce for the Tokyo style or whisk in white miso for the Kyoto style, and use spinach if komatsuna is hard to find.