Premium Japanese Aged Koikuchi Soy Sauce – Handcrafted Tradition from Tatsuno

Discover the Essence of Tradition: Premium Aged Japanese Soy Sauce

When it comes to authentic Japanese soy sauce, few can match the depth and elegance of our Premium Japanese Aged Koikuchi Soy Sauce.
Handcrafted by local artisans in Tatsuno, the historic heart of Japan’s soy sauce brewing, this sauce reflects over 400 years of tradition and the true art of fermentation.

Naturally Aged for Over 500 Days

Our Koikuchi Shoyu (dark soy sauce) is not rushed. It is naturally brewed and aged for more than 500 days, passing through six distinct Japanese seasons.
During this long maturation process, the soy sauce slowly develops a deep umami, rich aroma, and smooth, refined finish—a taste that represents the soul of traditional Japanese craftsmanship.

Deep Umami and Perfectly Balanced Flavor

This aged Japanese soy sauce harmonizes four essential tastes—umami, sweetness, sourness, and subtle bitterness—creating an exquisite balance.
It enhances the natural flavor of any dish, whether used in Japanese recipes like sashimi, tofu, and donburi, or international dishes such as Jambalaya, gumbo, or even grilled meats and pasta.
Each drop offers depth, richness, and authenticity.

Handcrafted by Skilled Japanese Artisans

Our soy sauce is not made in a factory—it is carefully handcrafted by artisans who use their five senses to monitor fermentation: touch, sight, sound, taste, and smell.
This meticulous process ensures every bottle of koikuchi shoyu carries the warmth and dedication of true Japanese craftsmanship.

Made with Natural, Non-GMO Ingredients

We believe that real flavor comes from purity.
Our soy sauce is brewed using:

• Japanese whole soybeans

• Non-GMO wheat

• 100% sun-dried sea salt

• Pure natural water from the Ibo River, Tatsuno

The result is a clean, additive-free soy sauce that delivers luxurious umami and an authentic, natural taste.

A Legacy from Tatsuno – Japan’s Soy Sauce Capital

For over four centuries, Tatsuno has been home to Japan’s finest soy sauce brewers.
Its mild climate and soft river water create the ideal environment for fermentation. Local craftsmen continue to protect these ancient methods, producing a traditional soy sauce from Japan that connects past and present.
Each bottle of our Premium Aged Koikuchi Soy Sauce is a tribute to that timeless heritage.

Experience the True Taste of Japan

Bring the essence of Japanese cuisine into your home with our Premium Japanese Aged Koikuchi Soy Sauce—a perfect harmony of time, patience, and skill.
Taste the difference of real, authentic soy sauce, naturally aged and brewed with passion in Tatsuno, Japan.