Yamagata Imoni: Local Food Guide & How to Eat (Yamagata)

When autumn arrives, people gather on the riverbank around huge pots to simmer taro, a beloved local food culture that symbolizes Yamagata.

Highlights

The Murayama style imoni simmers taro, beef, konjac, and green onion in a sweet and savory soy broth. The velvety taro soaks up the richness of the beef for a humble yet deep flavor. In the Shonai region, by contrast, the mainstream version uses pork, tofu, and burdock in a miso broth, so seasonings and ingredients differ by area even within the same prefecture, which adds to the fun. Remembering that the inland style is beef and soy while Shonai is pork and miso makes comparing them all the more enjoyable.

The Culture of Imonikai

An imonikai, where relatives and friends gather on the riverbank around a big pot to simmer taro, is a cherished sight of autumn. In Yamagata City the Nihonichi Imonikai Festival began in 1989 and grew into a large event drawing around one hundred thousand visitors from its first year. At the site an aluminum pot about six meters across, nicknamed Nabetaro, appears, and the scene of heavy machinery such as backhoes simmering a huge batch of imoni at once has become a specialty. Finishing the leftover broth by adding curry powder and udon, or turning it into a rice porridge, are popular ways to end the meal.

Enjoying the Seasons

September through October is peak imoni season. Crowds gather on the banks of the Mamigasaki River in Yamagata City, where big pots line up in rows as each group pleases. Under the clear autumn sky, the very time spent circling the fire and waiting for the pot to finish is the heart of an imonikai, and many families and groups spend the whole day there.

Access and Basic Information

The area along the Mamigasaki River flowing through Yamagata City is the classic imonikai spot. Some eateries in town serve imoni all year round.

Practical Travel Notes

• When to eat it: Peak imonikai season is around September to October as a guide, and some shops in town serve it year round.
• Regional flavor: The inland Murayama style is beef and soy, while Shonai favors pork and miso, so comparing them is a treat.
• What to wear: The riverside gets chilly, so bring a jacket, and a picnic sheet adds comfort.
• Finishing dish: Adding curry powder and udon to the leftover broth is a popular way to finish.

A Quick Tip

The riverside gets chilly, so bring a jacket and a picnic sheet for comfort. Some eateries in town serve imoni all year round.