Koshihikari rice is one of the most highly grown varieties of rice in Japan.
Shirakiku is grown in the US, but reviewers state it is as authentic as it gets without going to japan or spending much more for imported.
lowest price in 4 years according to camelcamelcamel.
average price seems to be about $40 on amazon for the 15lb bag.
https://www.amazon.com/dp/B0093ZT…uage=