Keno-shiru is a traditional local soup from the Tsugaru region of Aomori Prefecture. Packed with finely diced vegetables, wild mountain plants, beans, tofu, and other ingredients, this nutritious dish has been enjoyed for generations as a special food for the Little New Year, known as Koshōgatsu.
Because it can be prepared in large quantities and keeps well for several days, Keno-shiru was particularly suited to the traditional custom of January 16, a day when women were traditionally able to take a break from their household duties after the busy New Year period.
Keno-shiru contains a wide variety of ingredients. Common vegetables include daikon radish, carrots, and burdock root, while mountain vegetables such as bracken and butterbur add a distinctive local character.
Other traditional ingredients include zunda, or crushed soybeans, frozen tofu, and konnyaku. The ingredients are cut into small cubes before being simmered in a broth made with kombu kelp and dried fish. Miso or soy sauce is then used to season the soup.
The exact ingredients and seasoning vary from household to household and from one area to another. As a result, there are many different versions of Keno-shiru, each reflecting the tastes and traditions of the family that prepares it.
There are several theories about the origin of the name “Keno-shiru.” One explanation comes from the Tsugaru dialect, in which ke can refer to rice porridge. Another theory suggests that, in times when rice was precious, the finely chopped ingredients were made to resemble grains of rice as a way of making a satisfying dish while conserving rice.
Keno-shiru is also said to have been passed down since the time of Tamenobu Tsugaru, the founder of the Tsugaru domain, approximately 400 years ago.
Originally, Keno-shiru was closely associated with Koshōgatsu, or the Little New Year. During the first days of the year, women traditionally had to prepare meals, care for family members, and receive guests. January 16 provided an opportunity for them to return to their parents’ homes and rest.
Keno-shiru was prepared in advance so that the men and other family members remaining at home would have a nutritious meal. It was an ideal food for this purpose because it could be stored and reheated over several days.
In the past, the soup could even be allowed to freeze in the cold winter weather. Portions could then be broken off, reheated, and eaten as needed. This reflects the practical food-preservation knowledge developed in the snowy climate of northern Japan.
Keno-shiru is a type of shōjin ryōri, or Buddhist-inspired vegetarian cuisine, traditionally eaten during Koshōgatsu while people pray for good health and freedom from illness throughout the coming year.
Because it is made with numerous vegetables and plant-based ingredients, it is sometimes called “Tsugaru’s seven-herb rice porridge”, drawing a connection with the traditional Japanese New Year dish nanakusa-gayu.
In some households, the family first offers the prepared dish and prays together on the morning of January 16 before sitting down to eat. A large pot is usually prepared, allowing everyone to enjoy it over several days.
The preparation of Keno-shiru begins by finely chopping the vegetables, mountain vegetables, mushrooms, and other ingredients. Traditionally, large quantities of ingredients were chopped in wooden tubs or even large containers originally used for horse feed.
A large cooking pot is filled with roasted-dried sardines and roasted kombu, along with the prepared ingredients and water. Crushed soybeans known as zunda are also an important feature of the dish.
Once cooked, the soup can be divided into smaller pots and reheated over the following days. Interestingly, the flavor becomes deeper as the ingredients continue to release their savory juices into the broth.
There is no single universal recipe for Keno-shiru. The choice of vegetables, the amount of soybeans, the seasoning, and even the size of the chopped ingredients can differ from one family to another.
For this reason, Keno-shiru is cherished as a classic example of “the taste of home”. Among local women, conversations about how to make the dish can naturally begin whenever they gather, sometimes leading to lively discussions about each family’s own version.
Main region where the tradition is passed down: Tsugaru region
Main ingredients: Daikon radish, carrots, burdock root, bracken, butterbur, fried tofu, frozen tofu, soybeans, kombu, and miso
Keno-shiru offers much more than a comforting bowl of vegetable soup. Its ingredients reflect the natural bounty of the Tsugaru countryside, while its preparation preserves the food traditions, family customs, and practical wisdom of generations past.
For visitors exploring Aomori, tasting Keno-shiru is a chance to experience a quieter side of Japanese food culture. The humble ingredients, carefully prepared and slowly brought together in a savory broth, tell the story of Tsugaru’s winters, New Year traditions, and the enduring taste of home.