Ika-Ninjin: A Traditional Fukushima Dish|Comprehensive Explanation of History, How to Make, and Preservation Efforts
Ika-ninjin, a representative local cuisine of Fukushima Prefecture, is a simple yet profound dish made by finely slicing dried squid and carrots and pickling them in a sweet and salty soy-based sauce. With a history spanning over 100 years, this dish continues to be loved by Fukushima residents. This article comprehensively explains everything from its historical background to its specific preparation method and modern preservation and succession efforts.
What is Ika-Ninjin?
Ika-ninjin is, as the name suggests, a traditional local dish of Fukushima Prefecture with “dried squid” and “carrot” as its two main ingredients. Finely sliced dried squid and carrots are pickled in a sweet and salty sauce made from soy sauce, mirin, and zarame (rock sugar), resulting in an extremely simple cooking method. However, the umami of the dried squid, the sweetness of the carrots, and the unique texture harmonize exquisitely, creating a distinctive flavor.
It is enjoyed as a side dish for rice and as a snack with alcohol, and once eaten, its addictive taste makes it “a dish that makes rice go quickly,” widely prepared in Fukushima homes. In the era before refrigerators became common, it served an important role as a preserved food during the cold winter months.
History, Origins, and Related Events
A Tradition Continuing from the Edo Period
The history of ika-ninjin is extremely old, with records indicating it was already being eaten during the Edo Period. There are also records showing its existence more than 100 years ago, with the Fukushima area in the northern Nakadori region, particularly around Fukushima City, believed to be its birthplace.
At that time, in the inland Fukushima Prefecture, obtaining fresh seafood was difficult. However, dried squid transported from Hokkaido via coastal trade routes like the Kitamae-bune could be preserved for long periods as a dried product and was highly valued as a precious protein source. On the other hand, carrots were a familiar local vegetable that could be cultivated locally. By combining these two ingredients, a nutritious dish with excellent preservation qualities was created.
The Relationship with Hokkaido’s Matsumae-zuke
Interestingly, there is a theory that ika-ninjin is the origin of “matsumae-zuke,” a local dish from Hokkaido. It is believed that through trade routes connecting Fukushima and Hokkaido, this dish was transmitted to Hokkaido, where it was arranged locally by adding kelp and other ingredients to become matsumae-zuke. This episode demonstrates the historical importance of ika-ninjin and provides a glimpse into food culture exchange transcending regional boundaries.
A Traditional Food of New Year and Year-End Holidays
Ika-ninjin has been particularly cherished as an essential dish during year-end and New Year’s celebrations. Before refrigerators became widespread, using winter’s cold for preservation, large quantities were prepared at year-end and served on the New Year’s table as one of the festive dishes. Many Fukushima residents feel that “when the season for eating ika-ninjin arrives, New Year is approaching,” and it has served as a seasonal symbol.
Currently, with advances in refrigeration technology, it is manufactured and sold year-round, but demand still increases significantly during year-end and New Year periods, with many households either making it homemade or purchasing it.
Main Transmission Areas and Food Consumption Occasions
Centered on the Northern Nakadori Region, Spreading Throughout the Prefecture
The main transmission area of ika-ninjin is the northern Nakadori region of Fukushima Prefecture, particularly the Fukushima City area. However, due to its deliciousness and ease of preparation, it has now spread throughout Fukushima Prefecture, and is also enjoyed in the Aizu and Hamadori regions. In various locations throughout the prefecture, such as Shimogo Town, it is recognized as a “familiar dish,” establishing its position as a representative local cuisine of Fukushima Prefecture.
Food Consumption Occasions and Seasons
Traditionally, it was made and eaten during the cold season, particularly between November and March. This was not only from a preservation perspective but also for practical reasons, such as it being easier to rehydrate dried squid in water during cold weather.
In modern times, it is consumed on the following occasions:
- Year-end, New Year, and New Year’s celebrations: The most traditional way to eat it, as one of the dishes in the New Year’s festive spread
- Daily dining table: As a side dish for rice in everyday meals
- Alcoholic snack: As a snack for evening drinks
- Bento box side dish: As a preserved dish packed in lunch boxes
- Gift items: As a specialty product of Fukushima as a gift to acquaintances outside the prefecture
Main Ingredients and Materials (Serves 4)
The ingredients for ika-ninjin are extremely simple. The basic ingredients are as follows:
Basic Ingredients
- Dried squid (atarme): 2 pieces (approximately 100g)
- Carrots: 2 (approximately 300g)
- Soy sauce: 100ml
- Mirin: 50ml
- Sake: 50ml
- Zarame (or sugar): 2-3 tablespoons
Regional and Household Variations
While the basics are just dried squid and carrots, depending on the region or household, the following ingredients may be added:
- Kelp: Finely cut kelp added to increase umami
- Red chili pepper: Small amounts added for a slightly spicy finish
- Ginger: Julienned and added for flavor
- Sesame: Sprinkled on as a finishing touch
However, in households that maintain the traditional “old-fashioned taste,” it is most common to use only dried squid and carrots, placing emphasis on maximizing the flavors of these two ingredients.
Preparation Method
The preparation method for ika-ninjin is simple, but there are several tricks to making it delicious.
Preliminary Preparation
- Preparing the dried squid
- Soak the dried squid in water or lukewarm water for 30 minutes to 1 hour to soften it
- Squeeze out the water thoroughly and cut into fine strips approximately 5mm wide
- The soaking liquid has released umami and can be added in small amounts to the pickling sauce
- Preparing the carrots
- Peel the carrots and cut into fine strips approximately 5cm long
- Cut to approximately the same thickness as the dried squid for uniform texture
- Use raw or lightly salt-rub as preferred
Making the Pickling Sauce
- In a pot, add soy sauce, mirin, sake, and zarame and heat
- Bring to a boil until the zarame is completely dissolved, evaporating the alcohol
- Remove from heat and cool completely (if heated, the ingredients will cook)
Pickling
- Place the sliced dried squid and carrots in a clean storage container
- Pour the cooled pickling sauce over them, ensuring all ingredients are submerged
- Cover and store in the refrigerator
- Pickle for at least 1 hour, preferably half a day to a full day, for the flavors to blend
Tips for Making It Delicious
- Rehydrating the dried squid: Avoid over-rehydrating as it will lose texture; slightly firm is best
- Uniform cutting: Cutting the dried squid and carrots to the same thickness improves texture and flavor blending
- Pickling time: Ready to eat in about 1 hour, but pickling for 2-3 days further brings out the umami of the dried squid
- Sauce concentration adjustment: Adjust the amounts of soy sauce and zarame according to household preference
How to Eat and the Increasingly Familiar Flavors and Textures
Variations in How to Eat
Ika-ninjin can be enjoyed in various ways:
- As a rice side dish: The most popular way, with outstanding compatibility with white rice. The sweet and salty sauce and umami of the dried squid stimulate the appetite.
- As an alcoholic snack: It pairs well with any alcohol—Japanese sake, shochu, or beer—and the chewy texture of the dried squid makes it ideal.
- As ochazuke: Served over rice with hot tea or dashi poured over it, creating a different flavor experience.
- As a salad topping: When topped on Western-style salad, a new Japanese-Western fusion flavor emerges.
- As a pasta ingredient: Using it in Japanese-style pasta, the umami of the dried squid entwines with the noodles deliciously.
Unique Texture and Flavor
The greatest appeal of ika-ninjin is its unique texture. The crunchy, chewy texture of the dried squid and the crisp texture of the carrots harmonize in the mouth, and as you chew, the umami spreads. The soy-based sweet and salty sauce mingles with the umami components released from the dried squid, creating a deep flavor distinct from kombu and bonito dashi.
The flavor changes depending on the pickling period, a characteristic of the dish. When freshly pickled, each ingredient’s flavor is distinct, but as time passes, the sauce and the flavors of the dried squid and carrots become unified, transforming into a mellow, complex taste. This “increasingly familiar flavor” is one of the reasons ika-ninjin has been loved for so many years.
Preservation and Succession Efforts
Community Transmission Activities
In Fukushima Prefecture, various efforts are being made to pass down the tradition of ika-ninjin to the next generation:
Provision in School Lunches
Many elementary and junior high schools serve ika-ninjin in school lunches as an opportunity to learn local cuisine. It has become an important occasion to transmit local food culture to children.
Cooking Classes and Experience Events
Centered on women’s groups in communities and food life improvement promoters, cooking classes for making ika-ninjin are regularly held. Experience events targeting younger generations and people who have relocated from outside the prefecture are regularly implemented.
Registration in the Ministry of Agriculture, Forestry and Fisheries “Our Local Cuisine”
Registered in the “Our Local Cuisine” database operated by the Ministry of Agriculture, Forestry and Fisheries as a representative local dish of Fukushima Prefecture, it is promoted nationwide.
Commercialization and Contemporary Efforts
Commercialization by Manufacturers
There are multiple specialty manufacturers in Fukushima Prefecture that produce and sell ika-ninjin. By maintaining traditional methods while achieving large-scale production in sanitary facilities, distribution within and outside the prefecture has been realized. Product development with improved shelf life, such as vacuum packs and bottled versions, is also progressing.
Sales through Online Shops
Established manufacturers like Nishinoya have set up online shops, enabling purchases from anywhere nationwide. As a popular return gift for hometown tax donations, it serves a role in conveying Fukushima’s appeal nationally.
Introduction in Media
Featured in various television programs and magazines, including NHK’s “Saturday Studio Park,” nationwide recognition has increased. Through such media exposure, it has become a popular souvenir for tourists visiting Fukushima.
Information Dissemination Using SNS
Younger-generation producers and restaurants use Instagram, Twitter, and other SNS to disseminate the appeal of ika-ninjin and new ways to eat it. Information is shared about traditional arranged recipes as well, with efforts underway to make it acceptable to younger generations.
Utilization as a Tourism Resource
Actively promoted in tourism media such as Fukushima City Tourism Notes, it is positioned as a “local dish you must eat when visiting Fukushima.” Sales at roadside stations and tourist facilities are active, and it has become important content for experiencing Fukushima’s food culture.
Household Transmission
The most important place for transmission is, ultimately, in each household. The homestyle flavor passed from grandmother to mother to daughter differs subtly in each home and is cherished as “our taste.” The amount of soy sauce, the amount of zarame, the pickling period—unique recipes refined by each household exist, creating diversity and richness throughout the region.
As year-end approaches, the sight of parents and children making ika-ninjin together is still seen in many Fukushima households. Such everyday practice of food culture is the most reliable method of transmission.
Nutritional Value and Health Benefits
Ika-ninjin is not only delicious but also nutritionally excellent:
Nutrition of Dried Squid
- High protein, low fat: Excellent as a quality protein source
- Taurine: Supports liver function and aids fatigue recovery
- B vitamins: Assist energy metabolism
- Zinc: Important for maintaining immune function
Nutrition of Carrots
- β-carotene: Has antioxidant properties and converts to vitamin A in the body
- Dietary fiber: Helps maintain intestinal health
- Potassium: Helps regulate blood pressure
Effects of Fermentation and Aging
Through pickling, the nutrients in the ingredients break down, becoming easier to digest and absorb. Additionally, amino acids, which are the umami components of dried squid, leach out, increasing both flavor and nutritional value.
Enjoying on the Modern Dining Table
Use as a Time-Saving Dish
In modern busy lifestyles, ika-ninjin can be utilized as an excellent ready-made side dish. If made in batches on weekends, weekday meal preparation becomes significantly easier. Since it can be stored in the refrigerator for about a week, strategic batch preparation can add color to daily dining.
Arranged Recipes
Beyond traditional ways of eating, modern arrangements can also be enjoyed:
- Ika-ninjin fried rice: Stir-fried together with rice
- Ika-ninjin omelet: As an ingredient in egg dishes
- Ika-ninjin sandwich: Placed between bread for a new taste
- Ika-ninjin pizza: As a topping for Japanese-style pizza
As a Bento Box Side Dish
If excess liquid is lightly drained, it is ideal as a bento box side dish. With good color and delicious even when cold, it becomes a strong ally in daily bento preparation.
Conclusion
Ika-ninjin, as a local cuisine Fukushima Prefecture can be proud of, has been loved by its residents for over 100 years. Despite the simple combination of dried squid and carrots as ingredients, its profound flavor and unique texture possess a charm that is unforgettable once experienced.
With a long history continuing from the Edo Period, said to be the origin of Hokkaido’s matsumae-zuke, this dish is a precious testimony to the exchange of regional food cultures. Born as a winter preserved food and cherished as an essential New Year’s dish, its traditions continue to be passed down in modern times.
Through various efforts—including community transmission activities, commercialization for expanded distribution, and information dissemination via SNS—ika-ninjin continues to adapt to modern dining while maintaining its traditions. As it is easy to make at home, it is spreading beyond Fukushima Prefecture, serving a role in conveying the appeal of Japan’s local cuisine nationwide.
Whether as a rice side dish, an alcoholic snack, or a ready-made side dish, ika-ninjin continues to serve various roles on the modern dining table. When visiting Fukushima, please be sure to enjoy the local taste, and also try making it at home to experience this traditional flavor. The charm of ika-ninjin, a crystallization of Fukushima’s food culture that is simple yet profound, is something we hope many will come to know.
