Junmai, Ginjo or Daiginjo? How to Read a Sake Label Before World Sake Day (2026) — the Polishing Number, the Alcohol Question, and 8 Bottles from $17.99
Next Thursday, October 1, is World Sake Day. The date is not arbitrary: the Japanese industry fixed it in 1978 because October traditionally marks the start of the new brewing season, when the rice harvest comes in and the breweries fire up again. It is also the one week a year when American shops, restaurants and importers talk about sake at all — which makes it a good moment to learn the handful of words that decide what is in the bottle.
Those words are more useful than they look. A sake label is one of the most honest in the drinks world: most of the terms on the front are defined by Japan's National Tax Agency, and each one tells you something specific about how much the rice was polished and whether alcohol was added. Once you can read them, a shelf of unfamiliar bottles turns into a short, logical menu.
This is the same idea as our recent guides to what VS, VSOP and XO legally mean on cognac and how to read a mezcal label: a few regulated words, and what each one buys you.
Eight sakes that show you the whole ladder
The number that matters: the polishing ratio
Sake is brewed from rice, and the outer layers of a rice grain carry fat and protein that turn into heavier, earthier, sometimes rougher flavours. Brewers mill that outer layer away before they start. The polishing ratio (seimai-buai) tells you how much of each grain is left. A bottle marked 60% had 40% of every grain milled off; a bottle marked 35% had nearly two-thirds removed.
Lower number, more polishing, more expensive rice — and, as a rule, a lighter, more fragrant, fruit-forward sake. Higher number, less polishing, more of the grain's savoury, rice-and-umami character. Neither is "better". A heavily polished daiginjo is a delicate glass for sipping cold; a lightly polished junmai is the one you want next to grilled meat or warmed on a cold night.
The eight grades, on two axes
Premium sake falls into a legal category called tokutei meishoshu — "special designation sake". Every special-designation sake must use at least 15% koji rice, and the eight grades inside it are easiest to understand on two axes.
Axis one: was alcohol added? If the label says junmai ("pure rice"), the sake is rice, water, koji and yeast only. If it does not, the brewer added a small, capped amount of distilled alcohol near the end of fermentation. That sounds like cheating, and in cheap sake it can be — but in premium grades it is a technique. A little alcohol pulls aroma out of the mash and gives a lighter, crisper finish. Many of the most fragrant competition sakes are not junmai.
Axis two: how far was the rice polished?
- Honjozo — polished to 70% or less, with a small amount of added alcohol. Light, dry, easy, and often the best sake to warm. Eiko Fuji Ban Ryu "10,000 Ways" ($17.99) from Yamagata is the textbook example — the name refers to how many ways you can serve it.
- Junmai — no added alcohol and, since a 2004 rule change, no minimum polishing ratio. Fuller, rounder, more savoury. Joto Junmai "The Green One" ($22.99) is bright and plummy; Seikyo Takehara "Mirror of Truth" ($26.99) from Hiroshima leans honey, browned butter and spice.
- Ginjo / Junmai Ginjo — polished to 60% or less and fermented cold and slow. This is where sake starts to smell of melon, pear and apple. Koshino Sasameyuki ($26.99) is a dry Niigata junmai ginjo at 60%; Yuki no Bosha "Cabin in the Snow" ($37.99) from Akita is milled to 55% and fruitier.
- Daiginjo / Junmai Daiginjo — polished to 50% or less. The top of the ladder: silky, perfumed and best served cold. Dassai 45 ($29.99) puts its ratio in the name — 45% — and is the cheapest serious daiginjo on our shelf. At the far end, Watari Bune "Liquid Gold" ($109.99) is milled to 35% from Watari Bune, an heirloom rice variety that had disappeared from cultivation before its brewery revived it.
- Tokubetsu ("special") Junmai / Honjozo — a junmai or honjozo that is polished to 60% or less, or made by a special method the label has to explain. Shirakabegura Tokubetsu Junmai ($27.99) is a good-value example.
Everything outside those eight grades is futsu-shu, "ordinary sake", which makes up the majority of what Japan brews. There are no polishing or additive rules for it, and bottles like Gekkeikan ($9.99) and Sho Chiku Bai ($8.99) are the sake most Americans first drink warm at a sushi bar. Nothing wrong with that — but it is not what the grade names above promise.
The words that are not grades
A few more terms show up on labels and are worth knowing, because they describe how a sake was made rather than where it sits on the ladder:
- Nigori — coarsely filtered, so some rice solids stay in the bottle. Cloudy, creamy, usually a touch sweet. Joto Nigori "The Blue One" ($24.99) is a drier, more food-friendly take; Sho Chiku Bai Nigori ($12.99) is the classic sweet style. Shake gently before pouring.
- Kimoto and Yamahai — traditional, slower ways of building the yeast starter that let natural lactic bacteria do the work. Expect more acidity, more body and a savoury, almost yoghurt-and-mushroom depth. Kurosawa Junmai Kimoto ($32.99) is a widely poured benchmark, and one of the best sakes to serve warm.
- Genshu — undiluted. Most sake is cut with water to around 15% ABV; genshu is bottled closer to 18–20% and drinks bigger.
- Sparkling — light, low-alcohol and fun. Hou Hou Shu ($14.99) is a good way to open a dinner.
Three pairs to taste side by side
1. Same brewery, alcohol added or not. Ban Ryu and Joto "The Green One" come from the same brewery, Eiko Fuji in Yamagata. One is a honjozo, one a junmai. Taste them together and you will feel the difference added alcohol makes to weight and finish — for under $41 for both.
2. Junmai ginjo against junmai daiginjo. Pour Koshino Sasameyuki (60%) beside Dassai 45. The extra 15 points of polishing show up as fruit and perfume in the Dassai, and as rice and dryness in the Niigata bottle.
3. Cold against warm. Split a bottle of Kurosawa or Seikyo. Serve half chilled and gently warm the other half to around 40–45°C (104–113°F), by standing a small carafe in hot water. Warming a rich junmai opens up its umami; warming a daiginjo just flattens it, which is why you will almost never see one served hot.
Want a ready-made flight? The Japanese Sake Bundle ($104.99) does the choosing for you.
Buying and keeping sake
Sake is not wine: there is no vintage to chase and almost none of it improves in the bottle. Buy what you will drink within the year, store it cold and dark, and keep an opened bottle in the fridge and finish it within a couple of weeks. Most premium sake comes in 720ml bottles, not 750ml, so check the size when you compare prices.
For food, think about weight rather than cuisine. Daiginjo and ginjo suit raw fish, shellfish and anything delicate. Junmai and kimoto stand up to yakitori, pork, mushrooms, cheese and even a burger. Nigori is excellent with spicy food.
Where to start
If you buy one bottle for October 1, make it Dassai 45 — it shows you what polishing does for about $30. If you buy two, add a junmai such as Seikyo or The Green One and taste them together. And if you want the showpiece, Watari Bune "Liquid Gold" is the bottle to open with friends who think they know sake.
Browse the full Sake collection, and if the precision of Japanese brewing appeals, the same mindset runs through our Japanese whisky range — our guide to the best Japanese whiskies is a good next read. Everything else in the store, from wine to spirits, lives under Best Sellers.
