How does this differ from the koikuchi sauce of the same brand?

When it comes to make koikuchi soy sauce, the ingredients are koji(attached to soybean&wheat) and salt water. When making this premium soy sauce, instead of salt water, soy sauce once brewed are used, meaning that this premium soy sauce is double brewed with double ingredients & times. By doing so, the flavor and umami turn deeper and stronger.

Looking for artisinal japanese soy like that featured in salt*fat*acid*heat (samin nosrat). thick, has "legs"! any suggestions?

This brand is very salty.. I would suggest Jimmy Chews (?) Chinese soy.. very thick, tasty, mild salt. And a cool bottle. 😁

Is this brewed in metal or in wood barrels?

As Japanese soy I assume wood. I have been there years ago to a plant with this name. I can't attest today how it is made.

Is it gluten free is it gluten free

It is made the ancient traditional way from soy beans, wheat, and sea salt with active enzymes. There is a youtube video showing the building this is made in, which dates back hundreds of years. In the end though, wheat is used in the fermentation process which could result in trace amounts of gluten being found in the sauce. I'm not a food scientist, but if your reaction to gluten is strong, might want to avoid all soy sauce. If you can tolerate this, I'll say it is sooo much better than factory produced brands and highly recommend!

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Double Brewed Soy Sauce 1000 Days Aged 12.1 fl oz

Product ID: 285136800

Details

Allergen Information
Soy Wheat
Brand
YAMASAN KYOTO
Flavor
Double-brewed
Package Information
Bottle
Specialty
Non GMO

⏳1000+ days aged for deep umami

🌾Non-GMO Japanese soy & wheat

🛢️Double brewed for intense richness

R1496

Duties & taxes included

In stock

Sold byAmazon South AfricaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🍣 Elevate your plate with 3 years of perfected umami mastery!

TIMELESS UMAMI DEPTH - Aged over 1000 days to unlock complex, layered flavors that elevate every dish.
DOUBLE BREWED EXCELLENCE - Twice brewed with double ingredients for a richer, bolder soy sauce experience.
VERSATILE GOURMET UPGRADE - Transforms everyday meals from sushi to steak into unforgettable culinary moments.
PURE ARTISAN CRAFTSMANSHIP - Handcrafted in Tatsuno, Japan using century-old traditional methods—no shortcuts, no additives.
CLEAN NATURAL INGREDIENTS - Made with non-GMO soybeans, wheat, natural sea salt, and pure Ibo River water—no MSG.

YAMASAN KYOTO UJI Double Brewed Soy Sauce is a premium, artisanal Japanese soy sauce aged naturally for over 1000 days. Crafted in Tatsuno using traditional double-brewing methods and non-GMO ingredients, it delivers an exceptionally rich, complex umami flavor without additives or MSG. Perfect for sushi, sashimi, steak, and elevating everyday dishes with authentic Japanese craftsmanship.

Specifications

ASIN	B08VGBWQJW
ASIN	B08VGBWQJW
Allergen Information	Soy, Wheat
Best Sellers Rank	#12,783 in Grocery & Gourmet Food ( See Top 100 in Grocery & Gourmet Food ) #30 in Soy Sauce
Brand Name	YAMASAN KYOTO UJI
Container Type	Bottle
Cuisine	Japanese cuisine
Customer Reviews	4.7 4.7 out of 5 stars (1,000)
Diet Type	Vegetarian
Flavor	Double-brewed
Item Highlight	Artisanal Japanese Shoyu Sauce with Rich Umami, Natutally Brewed, No-MSG, For Sushi, Sashimi, Steak, and More, 360ml
Item Package Weight	0.65 kg
Manufacturer	YAMASAN KYOTO UJI
Manufacturer	YAMASAN KYOTO UJI
Number of Items	1
Number of Pieces	1
Package Size Name	12.1 fl oz
Product Dimensions	7.87 x 2.36 x 2.36 inches; 1.43 pounds
Size	12.2 Fl Oz
Specialty	Non GMO
Unit Count	12.2 Fluid Ounces
Units	12.2 Fluid Ounces

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