Look no further for the best soya sauce in Japan! This ancient soya sauce factory sells its products all over Niigata and is regarded as the best in the region. The lovely lady who runs the factory speaks some English and is so helpful and delightful. In the area are also sake breweries and miso factory, within walking distance. Well worth a trip to Nagaoka on the shinkansen or by car, while you're there ask 8Trips travel for local guidance.