Why Is Ibaraki Famous for Natto? Japan Travel Guide to Mito Natto, History & Local Food Culture

2026-04-26

When it comes to local food in Japan travel, Ibaraki Prefecture stands out as the nation’s top producer of natto. The reasons come down to three key factors: ideal land for soybean farming, a climate perfect for fermentation, and easy access to the Tokyo metropolitan area.

Natto culture, especially centered around Mito City, has grown into a nationally recognized brand. But you might be wondering: Why is Ibaraki so famous for natto? or What makes Mito natto different? In this guide, we’ll break down the history, unique characteristics, and even highlight must-visit spots—perfect for anyone exploring things to do in Japan and local culinary experiences.


Why Is Ibaraki Famous for Natto? Japan’s #1 Production Hub

There are clear reasons why Ibaraki became Japan’s leading natto region:

1. Vast Land Ideal for Soybean Farming

Located in the Kanto Plain, Ibaraki features wide, flat farmland.
This fertile soil and favorable climate allow for stable soybean production—the key ingredient in natto.

2. Climate Perfect for Fermentation

Natto is a fermented food, meaning temperature and humidity control are crucial.
Ibaraki’s relatively dry winters make it easier to manage fermentation, ensuring consistent quality and enabling large-scale production.

3. Easy Access to Tokyo

Mito City is about 1.5 hours from Tokyo by train.
Since the Meiji era, this convenient location has boosted natto distribution, helping Mito natto become a well-known name across Japan.

4. One of the Highest Production Levels in Japan

Today, Ibaraki leads the country in both natto production and shipments.
This is why “natto = Ibaraki” has become such a strong association.


The History of Mito Natto: How It Became Famous

While the exact origin of natto is debated, several key stories are closely tied to Mito:

• A Fermented Food Born by Chance

From the Heian to Sengoku periods, boiled soybeans were stored in straw for preservation.
It’s believed they naturally fermented into natto. One popular theory says samurai from the Mito domain carried it as a portable food.

• A Staple Food in the Edo Period

In Mito’s castle town, natto became a common everyday food.
Its long shelf life and high nutritional value made it popular among locals.

• Expansion Nationwide in the Meiji Era

With the introduction of railways, natto could be transported from Mito to Tokyo.
This led to a rapid rise in popularity, turning Mito natto into a nationwide specialty.


What Makes Ibaraki Natto Special? Taste & How to Enjoy It

Ibaraki’s natto is known for its high-quality ingredients and traditional production methods.

• Characteristics

  • Small to medium-sized beans that are easy to eat
  • Rich umami with natural sweetness from soybeans
  • Strong stickiness and bold aroma

• Basic Ways to Eat Natto

  • Over steamed rice
  • Seasoned simply with soy sauce and mustard
  • Mix thoroughly to bring out deeper flavor

• Unique Local Experiences

  • Try traditional straw-wrapped natto
  • Compare different varieties for a tasting experience

👉 Fun fact: Many say natto tastes better the more you mix it—around 50 stirs helps maximize its umami!


Must-Visit Spot for Natto Lovers

• Tengu Natto (Main Store)

  • Access: About a 10-minute walk from JR Mito Station
  • Other locations: Near Mito Station

Highlights

A long-established shop with over 100 years of history, representing authentic Mito natto culture.

Here, you can experience traditional straw-wrapped natto with a rich aroma and deep flavor. The beans are firm, letting you fully enjoy the natural sweetness of soybeans.

It’s also a great place to pick up souvenirs or traditional gifts from Japan. Perfect for travelers looking to combine sightseeing and local food experiences.


FAQ

Q. Why is Ibaraki famous for natto?

A. Because it has ideal farmland for soybeans, a climate suited for fermentation, and excellent access to Tokyo for distribution.

Q. What is Mito natto?

A. Natto produced mainly in Mito City, known as one of Japan’s most famous natto brands.

Q. Where should I try natto in Japan?

A. Specialty shops in Mito City are the best places to experience authentic flavors and compare different varieties.


Conclusion

Ibaraki became famous for natto thanks to the perfect combination of environment, history, and distribution.
The natto culture centered around Mito is now one of Japan’s most iconic food traditions.

Understanding the story behind this unique dish makes the experience even more rewarding.
If you’re planning your Japan travel, don’t miss the chance to try authentic natto in Ibaraki—one of the most memorable things to do in Japan for food lovers.