Question 1

Once the bottle is opened, is there a "best used by/expire" time frame?

Accepted Answer

I too am Japanese, I purchase food in bulk including 1or2 gallon containers of Soy Sauce that I put in smaller decanters for day to day use.    I’ve had some of them open for close to a decade or more with no ill effects.

Question 2

Is this heat treated or pasteurized?

Accepted Answer

Yes, it is briefly heated to 80 degrees Celcius during the filling process. Scientifically, it has been confirmed that by keeping the temperature at 70 degrees Celsius or higher for at least 1 minute, and by packing in a closed container, pathogenic microorganisms do not grow and toxins are not produced. Our Ponzu sauce is filled at 80 degrees Celsius, which sufficiently satisfies the above condition.

Thanks for your purchase and we look forward to doing more buisness with you in the future.

Question 3

How long does it last after it is opened and kept in the refrigerator?

Accepted Answer

I've never refrigerated my soy sauce. I've had it on my counter for several months with no problem. I live in Tacoma and it's not really hot here, but believe that soy sauce being so salty doesn't require refrigeration. By the way this soy sauce is amazingly good. I'm on my second bottle!

Question 4

Shouldn't this be 35 dollars?

Accepted Answer

If you love a good soy sauce and if you live outside Japan and do not have ready access to top quality soy sauce, then yes, this is truly worth 35 dollars (plus shipping).  I recently had the opportunity to use this soy sauce with real wasabi on sashimi (a to-go order from a very good, nearby sushi restaurant) and the experience was like none that I've had in the last 30+ years of eating sashimi.  This soy sauce and the real wasabi elevated the fish to a whole new level.  Even if you only ever get one bottle to try, it is worth experiencing a top notch food product like this once in your life.

(The real wasabi I used is "Muso From Japan Real Wasabi, 1.52 Ounce", available here on Amazon.)

ASIN	B0036TFXY0
ASIN	B0036TFXY0
Age Range Description	3-5 years
Best Sellers Rank	#10,526 in Grocery & Gourmet Food ( See Top 100 in Grocery & Gourmet Food ) #24 in Soy Sauce
Brand Name	Yamaroku
Color	No Color
Container Type	Box
Cuisine	Japanese
Customer Reviews	4.8 4.8 out of 5 stars (4,052)
Diet Type	Vegan, Vegetarian
Flavor	Soy
Item Form	Soy Sauce in Glass Bottle
Item Package Weight	1.03 kg
Item Type Name	Soy Sauce
Item Weight	1.1 pounds
Item model number	13‐04‐0220
Manufacturer	Yamaroku
Manufacturer	Yamaroku
Model Number	13‐04‐0220
Number of Items	1
Number of Pieces	1
Part Number	13‐04‐0220
Product Dimensions	3 x 3 x 9 inches; 1.13 pounds
Region of Origin	Japan
Size	18 Fl Oz (Pack of 1)
Specialty	Aged 4 Years, Quality, Traditional Brewing
Unit Count	18 Fluid Ounces
Units	18 Fluid Ounces

Yamaroku Shoyu Artisan Barrel Aged 4 Year Soy Sauce Tsuru Bishio 18 oz | Dark Sweet, Japanese, Traditional Fermented for Sushi & Cooking, Premium Gourmet

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