Mamakari Sushi: Where to Eat & What It Costs (Okayama)

Mamakari is the local name for "sappa," a small fish about 10 centimeters long caught in the Seto Inland Sea. The name comes from a saying that it is so delicious you would run to borrow rice (mama) from a neighbor's house. This small fish of the herring family, vinegar-cured and made into sushi as "mamakari sushi," is beloved as a regional dish that represents Okayama.

Highlights

The bluish, shiny skin and firm flesh are distinctive, and vinegar-curing softens the scent characteristic of small fish, leaving a refreshing aftertaste. Curing it in vinegar with young ginger, chili, and kelp is the traditional method; the bones become soft, and it pairs superbly with slightly sweet vinegared rice. You can enjoy it as a staple at sushi shops and local cuisine restaurants in Okayama City.

Seasonal Enjoyment

Mamakari is shipped from around June to November. The autumn fish, fattened on a diet of small shrimp, are especially rich, and beyond vinegar-curing it can be enjoyed grilled with salt, dried, pickled in rice bran, or as narezushi. It is also an essential dish at festivals and celebrations.

Access and Basic Information

It is served at local cuisine restaurants around JR Okayama Station and eateries near Korakuen Garden. You can drop by easily on foot or by streetcar from the station.

A Quick Tip

Since it pairs well with slightly sweet vinegared rice, enjoying it with local sake is recommended. Pressed sushi for souvenirs is also popular.

The Depth of the Vinegar Cure — Why You Can Eat the Bones

According to the Ministry of Agriculture, Forestry and Fisheries' "Our Regional Cuisine," mamakari is caught mainly in the Seto Inland Sea and is at its best around October, when it is fattiest and most delicious. The basic preparation is to remove the head and innards, butterfly the fish from the belly, pull out the backbone, sprinkle it with salt, leave it for about an hour, and then steep it in a sweet vinegar made of vinegar, salt, dashi kombu, ginger, and sugar. At the start of the steeping the bones are still hard, but the longer the fish sits in the vinegar the softer they become, until eventually the whole fish — bones, tail fin and all — can be eaten.

As you take a bite, the bright acidity of the sweet vinegar comes first, followed by the savory depth typical of a blue-backed fish. Adding ginger or finely shredded white leek sharpens the aroma and keeps the chopsticks moving. It used to be pickled in every household, but today it is common to buy it ready-made. In 2008 the "Mamakari Promotion Committee" was established with the aim of spreading mamakari as an Okayama specialty, and it continues to share information about the fish.

"Barazushi (Matsurizushi)" — Color for Okayama's Special Days

Alongside mamakari, the dish that represents Okayama is a gorgeous scattered sushi known as "matsurizushi," "Okayama barazushi," or "Bizen barazushi." According to the same Ministry of Agriculture, Forestry and Fisheries material, in the Bizen-Okayama region it is indispensable for festivals, celebrations, and entertaining guests, and it is packed generously with Seto Inland Sea seafood and seasonal vegetables.

An anecdote about its origins tells of an Edo-period lord of the Okayama domain issuing a frugality edict ordering that "commoners shall keep to one soup and one side dish." The troubled commoners, it is said, worked out the logic that if the fish and vegetables were turned into sushi toppings, they would no longer count as the "side dish" of a meal — and so they packed a tub-like handaki basin with sushi rice and mixed in more than ten kinds of seasoned vegetables and seafood. The ingredients used range from Spanish mackerel and conger eel to mogai clams, shrimp, bamboo shoots, and burdock, varying by household and district. The cast changes with the season: Spanish mackerel, butterbur, and bamboo shoots in spring, and matsutake mushrooms in autumn.

There is also a way of eating it called "nukuzushi," steamed and served warm — "nukui" being the Okayama dialect word for "warm." Vinegar-cured mamakari is used as a barazushi topping as well, so the two regional flavors become one on the table. Besides being available at kappo restaurants and sushi shops around the prefecture, the station bento "Momotaro no Matsuri Zushi," with its toppings arranged over vinegared rice, has been a long seller inside Okayama Station for more than 50 years.

Okayama's Other Specialty to Try: "Ki-nira" Yellow Chives

"Ki-nira" (yellow chives), also used to add color to barazushi, is an Okayama Prefecture specialty accounting for about 70 percent of national production. Cultivation is said to have begun around 1872 (Meiji 5) in the Musa and Tamagashi districts of Okayama City, and a distinctive method called "shading cultivation," which blocks out sunlight during growth, gives them their soft pastel-yellow color.

In addition to the natural sweetness of chives, the fibers are tender — tender enough to eat raw. Boiled briefly in salted water and dressed with soy sauce and sesame oil as "ohitashi," they let you enjoy their crisp texture and gentle aroma just as they are. They are available all year, but February is regarded as the season when they are at their most tender, and JA Zen-Noh Okayama has registered February 12 as "Ki-nira Day." Try setting both flavors on your table — the sea of the Seto Inland Sea and the fields of Okayama — with a serving of vinegar-cured mamakari alongside.

Practical Travel Notes

• Origins: The name comes from being "so delicious that it keeps you eating, enough that you would go to borrow rice (mama) from a neighbor." Its formal name is "sappa," a fish of the herring family.
• Where to try it: It is served at local cuisine restaurants around JR Okayama Station and eateries near Korakuen Garden. Pressed sushi for souvenirs is also popular.
• Season: Shipped from around June to November; the fattier autumn fish are especially rich.
• Preparation variations: Beyond vinegar-curing, it can be enjoyed grilled with salt, dried, pickled in rice bran, or as narezushi.
• Trip pairing: It is best enjoyed with local sake alongside sightseeing at Okayama Korakuen Garden.

Souvenir and Takeaway Hints

Mamakari is the small fish called sappa caught in the Seto Inland Sea, and "mamakari no suzuke" — the vinegar-cured version — is a regional flavor that represents Okayama. The name is said to come from it being so delicious that you would go to borrow rice (mama) from a neighbor. Its clean acidity and the savor of a blue-backed fish go well with rice and with sake, and it can also be enjoyed as sushi or grilled with salt. Vinegar-cured and processed products are available at souvenir shops, fishmongers, and by mail order, and items that keep well make good gifts. In Okayama, sampling the vinegar-cured mamakari so typical of the Seto Inland Sea is highly recommended.

Sightseeing Checklist

• Budget guide: The vinegar-cured fish is reasonably priced, and assorted sets are available
• Where to eat it: Restaurants, fishmongers, and souvenir shops in Okayama City and Kurashiki
• Recommended time: Both lunch and dinner; as an accompaniment to sake or to rice
• Crowd tips: Easy to buy as a souvenir item
• Enjoy it together with: Mamakari sushi, barazushi, Okayama local sake, and Seto Inland Sea fish

Practical Information

• Fish species: Mamakari's formal name is "sappa," a fish of the herring family.
• Shipping period and season: Shipped from around June to November. The autumn fish, fattened on plenty of small shrimp, are considered especially delicious.
• Origin of the name: It is said to come from the fish being so delicious that it keeps you eating, enough that you would go to borrow rice (mama) from a neighbor.
• Main areas where it is served: Local cuisine restaurants, sushi shops, fishmongers, and souvenir shops in Okayama Prefecture, including Okayama City and Kurashiki City. The vinegar-cured version is also distributed as a souvenir product.
• Main ways to eat it: Vinegar-cured (also used as a barazushi topping), grilled with salt, dried, and pickled in rice bran.
• Cautions: Vinegar-curing is not a heat treatment. According to the Ministry of Health, Labour and Welfare, treatment with the food vinegar used in ordinary cooking, salting, soy sauce, or wasabi does not kill anisakis larvae; prevention requires freezing at −20°C for 24 hours or more, or heating to 70°C or above (or 60°C for one minute). Those with allergies to blue-backed fish should also take care.

*Opening hours and prices at individual shops vary by establishment.*

📚 Sources

Okayama Prefecture official tourism site "Okayama Kanko WEB"; Ministry of Health, Labour and Welfare, "Let's Prevent Food Poisoning Caused by Anisakis." This article is compiled from Okayama Prefecture tourism information and information published by each shop. Prices, menus, and seasonal availability may change, so please check each shop's official information for details.

Practical Information for Your Visit

• The fish: The formal name of mamakari is sappa, a fish of the herring family.
• Shipping period and best season: The shipping period runs from around June to November. The autumn fish, fattened on plenty of small shrimp, are considered particularly tasty.
• Origin of the name: It is said to come from the idea that the fish is so delicious that you eat so much rice you have to go next door to borrow more rice (mama).
• Where it is mainly served: Local cuisine restaurants, sushi restaurants, fish shops and souvenir shops within Okayama Prefecture, such as in Okayama City and Kurashiki City. The vinegar-marinated version is also sold as a souvenir product.
• Main ways of eating it: Marinated in vinegar (also used as a topping for barazushi), grilled with salt, dried, or pickled in rice bran.
• Points to note: Marinating or curing in vinegar does not involve heat. According to the Ministry of Health, Labour and Welfare, treatment with the vinegar used in ordinary cooking, salting, soy sauce or wasabi does not kill anisakis larvae; to prevent infection the fish must be frozen at minus 20 degrees Celsius for 24 hours or more, or heated to 70 degrees Celsius or above (one minute at 60 degrees Celsius). People with an allergy to oily blue-skinned fish should also be careful.

Note: Opening hours and prices differ from restaurant to restaurant.

(Sources: Okayama Prefecture official tourism site Okayama Kanko WEB; Ministry of Health, Labour and Welfare, Let's Prevent Food Poisoning Caused by Anisakis)