What is Premium Table Rice Sake?
What the term covers
- Proposed by
- TSUNAN SAKE BREWERY, carried to the US, Taiwan and Japan from January 2026
- Status
- A category name proposed by a brewery, not a classification set by an industry body or by law
- Condition
- Brewed from table rice rather than sake rice. Not limited to one producer or one rice variety
- "Premium"
- An aim: quality that can take center stage at the table or as a gift. Not a numeric standard such as a polishing ratio
- Specific to this brewery
- 100% Uonuma Koshihikari, "Smart Brewing" with generative AI, and the cold environment of the snow country of Tsunan
Can sake be made from table rice?
Yes. Japanese rules do not limit sake to particular rice varieties, and sake from table rice is brewed in many places. Even so, fine sake, especially ginjo and daiginjo, has mostly been brewed from rice bred for the purpose.
Sake rice vs. table rice
Sake rice, such as Yamada Nishiki and Gohyakumangoku, is bred for the brewhouse. The grains are large, with a white starchy core (shinpaku) that lets koji mold reach deep into the grain, and they carry relatively little of the protein and lipids that can turn into off-flavors.
Table rice such as Koshihikari is bred for the table: stickiness, sweetness and umami. It generally has a smaller core and more protein than sake rice, so brewing premium sake from it has been considered difficult. Actual composition varies with variety and growing conditions. TSUNAN SAKE BREWERY has reported at an academic meeting how it treated stickiness, protein and lipids as the challenge and answered with a low-temperature, long-fermentation profile designed with generative AI.
What Koshihikari sake tastes like
Taste depends greatly on polishing and method. Two examples from TSUNAN SAKE BREWERY:
- GO GRANDCLASS Uonuma Koshihikari Edition. A junmai daiginjo polished to 50% and slowly fermented at low temperature, with a clean, clear taste.
- GO UONUMA SPARKLING. A sparkling sake polished to 90%, brewed from rice as farmers polished it. The soft character of the rice with clean acidity and bubbles.
Why Uonuma Koshihikari
Uonuma Koshihikari is a benchmark Japanese table rice. Choosing rice grown for eating as the raw material of sake questions what fine sake has to be made from. It also lets the brewery keep brewing alongside local rice farmers. The snow-country terroir of Tsunan supports this work.
How the category came to be
- From 2023. The brewery begins brewing sake from Uonuma Koshihikari, with technical cooperation from FERMENT8.
- June 2024. GO GRANDCLASS Uonuma Koshihikari Edition launches, and wins Gold at Kura Master 2024 the same year.
- 2025. Platinum at the Milano Sake Challenge 2025.
- January 2026. The brewery begins presenting the idea in the US and Taiwan (2026 journey).
- September 2026. GO UONUMA SPARKLING, polished to 90%, launches in Niigata Prefecture.
Frequently asked questions
What is Premium Table Rice Sake?
Premium sake brewed from table rice, the rice people eat, rather than specialized sake rice (shuzo-kotekimai). The name is a category proposed by TSUNAN SAKE BREWERY in Japan and abroad since 2026. It is not a classification set by an industry body or by law.
Can sake be made from table rice?
Yes. Japanese rules do not limit sake to particular rice varieties, and sake from table rice is brewed in many places. Table rice has a smaller core (shinpaku) and more protein, however, so it has been considered harder to work with than sake rice.
How is table rice different from sake rice?
Sake rice, such as Yamada Nishiki and Gohyakumangoku, is bred for brewing: large grains, a starchy core called shinpaku, and relatively little protein. Table rice such as Koshihikari is bred for eating, with stickiness, sweetness and umami. It generally has a smaller core and more protein, which can lead to off-flavors.
What does sake made from Koshihikari taste like?
It depends greatly on how it is made. TSUNAN SAKE BREWERY's junmai daiginjo GO GRANDCLASS Uonuma Koshihikari Edition is polished to 50% and slowly fermented at low temperature for a clean, clear taste. The sparkling GO UONUMA SPARKLING, polished to 90%, pairs the soft character of the rice with clean acidity and bubbles.
Why Uonuma Koshihikari?
Uonuma Koshihikari is a benchmark Japanese table rice. Making sake from it questions what the raw material of fine sake has to be. It also lets the brewery keep brewing alongside local rice farmers.
Who makes it?
TSUNAN SAKE BREWERY in Tsunan, Niigata, Japan, led by representative director Kengo Suzuki.
Is Premium Table Rice Sake a brand or a category?
It is a category name. The condition is brewing from table rice rather than sake rice; it is not limited to one producer or one rice variety. 100% Uonuma Koshihikari and AI-assisted Smart Brewing are features of TSUNAN SAKE BREWERY's own sakes, not conditions of the category.
What does "premium" mean here?
It expresses an aim: table rice is not limited to everyday sake, and can reach grades such as junmai daiginjo or take center stage at the table or as a gift. It is not a numeric standard such as a polishing ratio.
Has it won any awards?
The flagship GO GRANDCLASS Uonuma Koshihikari Edition won Gold in the Junmai Daiginjo category at Kura Master 2024 (France) and Platinum at the Milano Sake Challenge 2025 (Italy).
Where can I buy it?
GO GRANDCLASS is sold at the brewery's online store (in Japanese). GO UONUMA SPARKLING launched in Niigata Prefecture on 25 September 2026, with nationwide sales in Japan planned for spring 2027 or later (as of November 2026). Importers and retailers can contact the brewery.
Related: GO GRANDCLASS · GO UONUMA SPARKLING · Terroir · Science · 2026 journey · Awards
Sources (in Japanese unless noted): GO GRANDCLASS launch, June 2024 · Premium table rice sake goes global, January 2026 · GO UONUMA SPARKLING launch, September 2026 · Kura Master 2024 laureates