Oma Tuna the Finest Bluefin at the Northern Tip of Honshu

Oma town, jutting into the Tsugaru Strait at the northernmost tip of Aomori Prefecture, is renowned as one of Japan foremost sources of bluefin tuna. Raised in rough seas, the bluefin here stands out for its generous fat and the deep flavor of its lean meat. A single fish landed by pole and line is treated as something special even at market. The powerful taste of this tuna, found nowhere else, keeps drawing people back.

Highlights

Oma bluefin is famous for a traditional method in which fishermen catch each fish one at a time. Because the fish are handled with great care and never bruised, freshness and quality are preserved. Registered as a regional collective trademark, Oma maguro is known nationwide as a brand. Eateries near the port serve tuna landed that very day as sashimi or over rice, letting you enjoy the differences between cuts, from melting fatty otoro to firm and flavorful lean meat. A plate savored while overlooking the strait is truly exceptional.

Enjoying the Seasons

Bluefin is at its best in winter, when the fat is richest. In the biting cold the flesh firms up and the flavor grows deep and concentrated. Even so, many shops in Oma serve tuna year round, each season showing a different face. Summer brings light and refreshing lean meat, while winter offers otoro that melts on the tongue, so the impression changes with the time of your visit. An event themed on Oma tuna is also held each autumn, drawing crowds with attractions like tuna cutting shows.

Access and Basic Information

Oma town is about two and a half hours by car from central Aomori City. From Hakodate it is roughly ninety minutes by ferry, making access from Hokkaido easy as well. Eateries serving tuna dishes dot the area around the port, and most grow lively around lunchtime. Cape Oma, the northernmost point of Honshu, has a Tuna Pole and Line Fishing Monument that is a popular photo spot. Popular shops sometimes sell out early, so visiting right after opening is recommended.

Practical Travel Notes

• Cape Oma is the northernmost point of Honshu, and on clear days you can see the coastline of Hokkaido across the Tsugaru Strait. It is a spot worth stopping by along with your meal.
• The Shimokita Peninsula in winter is prone to disrupted transport from snow and strong winds, so if driving, check road conditions and traffic information in advance.
• Otoro is a pricey cut, but there are also affordable options such as lean meat, medium fatty tuna, and tuna rice bowls. You can choose to suit your budget.
• Arriving by ferry from Hakodate lets you enjoy Oma tuna along the route connecting Hokkaido and Aomori.

A Quick Tip

Take the first bite with nothing added. Once you have confirmed the natural sweetness and aroma of the tuna, add just a touch of soy sauce to make the quality of the fish stand out even more. Asking the local shop owner about the seasonal cut is a pleasure unique to Oma. Since the fat content changes with the season of your visit, ask about the day recommendation.

Practical Information for Your Visit

• Fishing season and peak: Tuna fishing at Oma usually starts around August and continues until around January. The peak is said to run from autumn into winter as the water grows colder, and this is when large fish with fine fat are landed.
• Fishing methods: Pole-and-line fishing by day, and by night longline fishing, in which many branch lines are attached to a single main line. Unlike methods that catch fish in nets, these leave the tuna unmarked.
• Managing the brand: Oma Maguro was registered as a regional collective trademark by the Oma Fisheries Cooperative Association in 2007. Tuna of 30 kilograms or more that are shipped out carry a serially numbered Oma Maguro sticker on the cheek, so it is strictly recorded which boat caught which tuna, when and by what method. The species is wild Pacific bluefin tuna (hon-maguro).
• Available all year: Because tuna landed during the fishing season is flash-frozen and kept in stock, Oma Maguro can be eaten in Oma throughout the year regardless of the season. Stock varies from shop to shop, however, and the official guidance is to contact the shops directly.
• Access: About 3 hours by car from the Aomori-Higashi IC on the Tohoku Expressway, about 3 hours by car from the Hachinohe IC on the Hachinohe Expressway, and about 2 hours 30 minutes by car from Shichinohe-Towada Station on the Tohoku Shinkansen. Hakodate to Oma takes about 90 minutes on the Tsugaru Kaikyo Ferry (timetables change with the season). By local bus, take the Shimokita Kotsu Sai Line (outbound) and get off at Omazaki or Ferry Noriba-mae.
• Points to note: Tuna is also a species in which Anisakis can be found. According to the Ministry of Health, Labour and Welfare, Anisakis larvae are not killed by vinegar, salting, soy sauce or wasabi, and freezing at -20 degrees C for 24 hours or more, or heating to 70 degrees C or above (60 degrees C for 1 minute), is required. If severe pain in the pit of the stomach, nausea or vomiting appears anywhere from 1 hour to several days after eating raw fish, seek medical attention promptly.

* Opening hours and prices of individual shops vary from shop to shop.

(Sources: official website of the Oma Town Tourism Association; the Aomori Prefecture tourism information website Amazing AOMORI; Ministry of Health, Labour and Welfare, Let Us Prevent Food Poisoning Caused by Anisakis)