Akayu Ramen is a local specialty from the former town of Akayu in Nanyo City, Yamagata Prefecture. While many ramen dishes in Yamagata are known for their soy sauce-based broths, Akayu Ramen has a distinctive style featuring a miso-based soup topped with a mound of spicy miso.
The spicy miso is placed in the center of the bowl rather than being mixed into the soup from the beginning. Diners can gradually dissolve it into the broth as they eat, allowing the flavor and level of spiciness to change little by little. This gradual transformation is one of the defining pleasures of Akayu Ramen.
Akayu is also known as a “town of ramen”, and one of its best-known ramen shops is Ryushanghai Akayu Main Shop. Founded in 1958, this long-established restaurant attracts ramen lovers from throughout Japan who come to taste its signature Akayu Karami Miso Ramen.
The dish combines a rich miso broth with spicy miso made using chili peppers associated with the Akayu area, along with thick, flat, curly noodles. The substantial noodles hold plenty of the flavorful broth, while gradually mixing in the spicy miso adds new layers of heat and aroma.
Ryushanghai places particular emphasis on making its own noodles. The noodles are made with high-quality wheat and a high-hydration dough. Each portion is kneaded by hand to create its characteristic curls.
The thick, flat noodles have a pleasantly chewy texture and firm bite. Their shape allows them to hold the rich miso broth well. At approximately 180 grams per serving, they also make for a satisfying and filling bowl of ramen.
The broth combines the flavors of ingredients such as dried sardines, pork bones, chicken bones, onions, and carrots. The result is a rich and savory soup with considerable depth.
Typical toppings include chashu pork, narutomaki fish cake, bamboo shoots, and green laver. These ingredients complement the richness of the miso while adding different textures and aromas.
The most distinctive feature of Akayu Karami Miso Ramen is the spicy miso placed in the middle of the bowl. It is based on red miso from Yamagata and combined with chili peppers, garlic, and other ingredients.
If all of the spicy miso is immediately mixed into the soup, the ramen can become quite hot. For this reason, diners are encouraged to dissolve it a little at a time. The first few bites allow you to appreciate the original miso broth, while subsequent bites gradually gain more heat, garlic aroma, and complexity.
Ryushanghai was founded in 1958. In its early days, the restaurant struggled to attract enough customers. According to the story passed down by the restaurant, the first owner sometimes took leftover soup home, added miso, and turned it into miso soup for his family.
One day, his son added noodles to the miso soup and enjoyed the combination. He encouraged his father to try developing it as a ramen dish, which became the starting point for the creation of a new style of ramen.
After repeated experimentation, the restaurant developed a distinctive style in 1960. Spicy miso made with local chili peppers from Akayu and Yamagata red miso was placed directly on top of the ramen rather than being mixed throughout the soup in advance.
This approach allows each diner to control the amount of spicy miso they mix into the broth. The ability to adjust the heat while gradually changing the flavor has become one of the defining characteristics of Akayu Karami Miso Ramen.
Miso ramen is often associated with Sapporo, where the restaurant Ajino Sanpei is widely credited with introducing its own miso ramen in 1961. Ryushanghai began serving its miso ramen around the same period.
At the time, information did not circulate as widely as it does today. Ramen critic Hiroshi Osaki has suggested that the development of miso ramen in the two regions may have occurred independently rather than one being directly modeled on the other.
Ryushanghai continued to build a loyal following in Akayu over the decades. In 2005, the restaurant opened a branch at the Shin-Yokohama Ramen Museum, introducing its ramen to an even wider audience.
In 2008, a cup noodle version called “Ryushanghai Yamagata Akayu Karami Miso Ramen”, produced by Myojo Foods, was sold at 7-Eleven stores. These developments helped introduce Akayu Karami Miso Ramen to ramen fans throughout Japan.
Akayu Ramen has become more than the specialty of a single restaurant. It is now an important part of the food culture of Nanyo City and is used to promote the area’s culinary identity.
In 2017, the booklet Nanyo-shi no Ramen (“Ramen of Nanyo City”), produced through Nanyo City’s “Ramen Section R&R Project,” introduced Akayu Ramen and Ryushanghai as part of the city’s local ramen culture.
The broth combines ingredients such as dried sardines, pork bones, chicken bones, onions, and carrots to create a deep, savory flavor.
Common toppings include chashu pork, narutomaki fish cake, bamboo shoots, and green laver.
The spicy miso is based on Yamagata red miso and includes chili peppers and garlic. Its heat and aroma provide a strong accent to the rich soup.
The ramen uses thick, flat, curly noodles made with high-hydration dough. Their chewy texture and firm bite make them particularly well suited to the rich miso broth.
One of the best ways to experience Akayu Karami Miso Ramen is to gradually mix the spicy miso into the broth.
Start by tasting the miso soup without mixing in the spicy topping. Then add a little at a time. As the spicy miso dissolves, the ramen develops additional heat, garlic aroma, and depth, creating several different flavor stages within a single bowl.
If you enjoy spicy food, you can mix in more of the topping to increase the heat. At some restaurants, additional spicy miso may also be available, allowing diners to customize the intensity to their preference.
Akayu’s ramen culture is not limited to miso ramen. At Ryushanghai, visitors can also enjoy soy sauce-based ramen topped with spicy miso.
Interestingly, Ryushanghai uses the name “Akayu Ramen” for its soy sauce-based ramen, while its signature miso dish is officially called “Akayu Karami Miso Ramen.”
Akayu Ramen is a distinctive regional specialty combining thick, flat, curly noodles, a rich miso broth, and spicy miso that diners can gradually mix into the soup according to their taste.
The history of the miso ramen developed by Ryushanghai in 1958 has continued as a beloved local flavor and has grown into a ramen style known by enthusiasts throughout Japan.
“Akayu Ramen,” “Akayu Karami Miso Ramen,” and “Akayu Karami Miso Ramen” are registered trademarks associated with the ramen developed by Ryushanghai. When visiting Akayu, trying this distinctive local bowl and gradually dissolving the spicy miso into the soup is a flavorful way to experience one of Yamagata’s best-known regional ramen traditions.