Kubota Manju (久保田 萬寿) Junmai Daiginjo 1800ml is a junmai daiginjo (a type of sake made only from rice, rice koji, and water, using highly polished rice) made by Asahi-Shuzo (朝日酒造) in Niigata Prefecture. Because the rice polishing ratio and alcohol content shown differ depending on the sales page, it is also a product where comparing the numbers can be confusing. In this article, we organized the quantity, ingredients and differences in labeling, gift options, and reviews, based on the Rakuten Ichiba and Amazon product pages, Asahi-Shuzo’s official page, and Rakuten reviews.
Drinking by anyone under 20 is prohibited by law in Japan. Please follow the laws of your country or region. Drinking during pregnancy or while breastfeeding may affect the development of the fetus or infant. Never drink and drive.
What We Confirmed
- Quantity and how many people it serves
- Storage method and shelf life
- Ingredients and allergen labeling
- Whether it works as a gift
- Trends in public reviews
Basic Information
This table transcribes what is stated on the product pages. However, the “not confirmed” labels and our notes are Ochinity’s own.
| Product Name | 久保田 萬寿 純米大吟醸 1800ml (Asahi-Shuzo)The product name shown on the Rakuten product page is a long listing with many words describing gift occasions and the like. Only the product name part is shown here. |
|---|---|
| Name | Junmai daiginjo (as shown in the product name)Sources: Rakuten Ichiba and Amazon product pages, Asahi-Shuzo official page (viewed October 3, 2026) |
| Amount | 1800ml. There is no size selection; it comes in one sizeSources: Rakuten Ichiba and Amazon product pages, Asahi-Shuzo official page (Asahi-Shuzo also offers a 720ml size, but the product in this article is 1800ml) |
| Rice Polishing Ratio | Asahi-Shuzo’s official page states 50% for the koji rice and 33% for the main (kakemai) rice. This differs from what the Rakuten Ichiba product description shows (35%) (see “Differences in Labeling by Sales Page” below) |
| Alcohol Content | Asahi-Shuzo’s official page states 15%. This differs from what the Rakuten Ichiba product description shows (15.5) (see “Differences in Labeling by Sales Page” below) |
| Sake Meter Value / Acidity | Sake meter value (nihonshu-do) +2, acidity 1.2Sources: Rakuten Ichiba product description, Asahi-Shuzo official page (not shown on the Amazon product page) |
| Storage Method | Not confirmed (we could not find it on the Rakuten Ichiba product page or Asahi-Shuzo’s official page). The Amazon product page advises storing it after arrival in a place away from light with little temperature changeSource: Amazon product page (viewed October 3, 2026) |
| Best-Before Date | Not confirmed (we could not find it on the Rakuten Ichiba or Amazon product pages or Asahi-Shuzo’s official page) |
| Raw Material Origin | Rice and rice koji. Asahi-Shuzo’s official page states that the koji rice is Gohyakumangoku (五百万石) and the main rice is rice from Niigata PrefectureSources: Asahi-Shuzo official page, Rakuten Ichiba product description (shown as rice and rice koji [Gohyakumangoku]), Amazon product page (ingredients shown as rice, rice koji, water) |
| Place of Processing | Niigata PrefectureSources: Amazon product page (origin: Niigata Prefecture), Asahi-Shuzo official page (location: Nagaoka City, Niigata Prefecture) |
| State / How to Enjoy (Whether Cooking Is Required) | As this is an alcoholic drink, cooking does not apply. The Amazon product page suggests drinking it chilled or gently warmed (okan). We found no temperature recommendation on the Rakuten Ichiba product page or Asahi-Shuzo’s official pageSource: Amazon product page |
| Shipping | It is shown as eligible for “あす楽” (Asuraku, Rakuten’s next-day shipping service). Information on refrigerated delivery is not confirmedSource: Rakuten Ichiba product page |
| Manufacturer | Asahi-Shuzo Co., Ltd. (朝日酒造株式会社, Nagaoka City, Niigata Prefecture)Sources: Asahi-Shuzo official page, Amazon product page (manufacturer) |
| Shop | 地酒の加登屋 (Rakuten Ichiba) |
Prices are not listed because they change. Please check the links above for the latest prices and stock.
Differences in Labeling by Sales Page
| Item | Rakuten Ichiba (地酒の加登屋) | Amazon | Asahi-Shuzo official |
|---|---|---|---|
| Rice polishing ratio | 35% | Koji rice 50% / main rice 33% | Koji rice 50% / main rice 33% |
| Alcohol content | 15.5 | 15% (product description) / 15 percent by volume (listing details) | 15 degrees (度) |
| Sake meter value / acidity | +2 / 1.2 | Not shown | +2.0 / 1.2 |
Sources: Rakuten Ichiba product description, Amazon product page, Asahi-Shuzo “久保田 萬寿” official page (all viewed October 3, 2026)
This article is written based on the official labeling of the manufacturer, Asahi-Shuzo. The Rakuten Ichiba sales page differs from the official and Amazon labeling, but we have no basis for judging which one is a typo. Asahi-Shuzo’s official page also notes that the figures may vary slightly. Please check what the Rakuten Ichiba sales page shows before purchasing.
Ingredients and Allergen Labeling
The ingredients are listed as rice and rice koji (the Amazon product page lists the ingredients as rice, rice koji, and water). As far as we checked, we could not find allergen labeling on the Rakuten Ichiba or Amazon product pages or on Asahi-Shuzo’s official page. This item is not confirmed. If you have allergy concerns, please contact the seller before purchasing, or check the label on the product when it arrives.
Reference: Consumer Affairs Agency, Japan, “About Allergen Labeling” (viewed October 3, 2026)
Five Things to Check Before Buying
| What to Check | For This Product | Basis |
|---|---|---|
| 1. Quantity / servings | 1800ml. One size only; no indication of how many people it serves | Rakuten Ichiba and Amazon product pages, Asahi-Shuzo official page |
| 2. Storage and shelf life | Not found on the Rakuten Ichiba product page or the official page, so not confirmed. Best-before date also not confirmed. Amazon gives storage guidance | Checked each product page (October 3, 2026) |
| 3. Ingredients / allergen labeling | Rice and rice koji. The rice polishing ratio and alcohol content differ by sales page (see the table below Basic Information). Allergen labeling not confirmed | Rakuten Ichiba and Amazon product pages, Asahi-Shuzo official page |
| 4. Suitable as a gift? | Shown as supporting a recipient name on the noshi (Japanese gift label) and message entry. Types of noshi inscription and a gift box not confirmed | Rakuten Ichiba product page |
| 5. Review trends | Rated 4.82/5 on Rakuten Ichiba (797 reviews). We read the first 60 reviews in Rakuten’s default order (posted June 2006 to December 2024, the latest in December 2024; 1 posted in the last two years) and all 18 reviews rated 1★ to 3★. The following are trends within what we read and may not reflect the current state of the product. Many say it was well received as a gift, while some comments mention shipping notifications or how the aroma and taste of the delivered product came across | Rakuten customer reviews (viewed October 3, 2026) |
Suitable as a Gift?
On the Rakuten Ichiba product page, the gift options field shows “楽ギフ_のし宛書” (recipient name on noshi) and “楽ギフ_メッセ入力” (message entry), and wrapping is also shown as available (source: Rakuten Ichiba product page, viewed October 3, 2026). Please do not give alcohol as a gift to anyone under 20.
- Noshi: Shown as supporting a recipient name. The types of inscription (such as oseibo [year-end gift], ochugen [midsummer gift], and uchi-iwai [return gift]) are not confirmed
- Message: Shown as supporting message entry. We could not confirm name printing
- Gift box / wrapping: Wrapping is shown as available. A gift box is not confirmed
- Asuraku: Shown as available. We could not confirm on the product page whether noshi and wrapping are possible when ordering with Asuraku
- Delivery date and time selection: We could not confirm this in the text of the product page
Among the reviews we read, many said they used it as a gift for occasions such as Father’s Day, New Year greetings, year-end gifts (oseibo), return gifts (uchi-iwai), and 60th birthday celebrations, and that it was well received. There were also 2 reviews (from 2008 and 2009) saying the noshi was an outer noshi placed on top of the wrapping paper (these are trends within what we read and may not reflect the current state of the product; source: Rakuten customer reviews, viewed October 3, 2026; see the next section on reviews for details).
What Public Reviews Say
We organized the Rakuten Ichiba product reviews by theme. Ratings are as of the time we viewed them and will change afterward.
| Site | Rating | Reviews | Viewed |
|---|---|---|---|
| Rakuten customer reviews (product page) | 4.82 / 5 | 797 | October 3, 2026 |
Rating breakdown: 5★ 682 / 4★ 97 / 3★ 13 / 2★ 2 / 1★ 3 (as shown on Rakuten Ichiba, viewed October 3, 2026)
What we read: the first 60 reviews in the default order (posted June 2006 to December 2024, the latest in December 2024) and all 18 reviews filtered to 1★, 2★, and 3★ (3 at 1★, 2 at 2★, 13 at 3★; posted June 2006 to July 2023), 78 in total. Of the 60 in the default order, 1 was posted in the last two years (October 2024 or later), and most were posted in 2021 or earlier. These are trends within what we read and may not reflect the current state of the product.
What Reviewers Praise
Well received as a gift
31 of the 60 reviews in the default order said they used it as a gift for occasions such as Father’s Day, New Year greetings, year-end gifts, return gifts, and 60th birthday celebrations, and that the recipient was pleased. None were posted in the last two years; most were posted between 2006 and 2022.
Soft mouthfeel and easy to drink
9 of the 60 reviews in the default order described it as soft on the palate, smooth, or easy to drink. Taste perception varies from person to person, and there is also a separate review saying it tasted sweet.
Wrapping, noshi, and message cards
6 of the 60 reviews in the default order said the wrapping was careful, or that the shop handled a noshi or message card. Most came from people who used it as a gift.
Source: Rakuten customer reviews (viewed October 3, 2026)
What Reviewers Note
Shipping notifications
3 of the 18 reviews rated 1★ to 3★ mentioned not receiving notice of shipment or a tracking number. All were posted in 2009 or earlier, with none from the last two years. When sending a gift, there are times you may want to know whether it reached the recipient.
How the aroma and taste of the delivered product came across
3 of the 18 reviews rated 1★ to 3★ said the aroma or taste of the delivered product was different from what they expected, or seemed different from what they had drunk before (posted in 2006, 2018, and 2023, with none from the last two years). Since perception varies from person to person even for the same product, we report only the number.
Value for the price and personal taste
2 of the 13 reviews rated 3★ (from 2009 and 2014) mentioned whether it was worth the price. One of them wrote that it tasted sweet and did not suit their personal taste.
Source: Rakuten customer reviews (viewed October 3, 2026)
Who It Suits / Who Should Be Careful
Who It Suits
- People who want to choose while checking Asahi-Shuzo’s official labeling
- People who want to choose a gift from a sales page that supports a recipient name on the noshi and message entry
- People looking for the 1800ml size
Who Should Be Careful
- Anyone under 20 (purchasing and drinking are prohibited by law in Japan)
- People who are pregnant or breastfeeding (drinking may affect the development of the fetus or infant)
- People bothered that the rice polishing ratio and alcohol content shown on the sales page they buy from differ from the official labeling
- People for whom the storage method, best-before date, allergen labeling, types of noshi inscription, or a gift box are deciding factors (some items are not confirmed)
Prices, stock, shipping fees, and delivery dates are subject to change. This article’s information-as-of date is October 3, 2026. Please be sure to check the listing at the link before purchasing. For the Amazon product page, we have confirmed only that the product name, manufacturer, and volume match. Please check the seller and availability at the link. Anyone under 20 cannot purchase this product.
This article contains affiliate links (advertising). Editorial Policy
Summary
- The rice polishing ratio and alcohol content differ between the Rakuten Ichiba sales page and Asahi-Shuzo’s official page. This article is based on the official labeling; check what the Rakuten sales page shows before purchasing
- The storage method, best-before date, and allergen labeling could not be found on the Rakuten Ichiba product page or the official page, so they are not confirmed. The types of noshi inscription and a gift box are also not confirmed
- Reviews stand out for saying it was well received as a gift, but there are few posts from the last two years. Drinking by anyone under 20 is prohibited by law in Japan, and people who are pregnant or breastfeeding should avoid drinking
Related Pages
This article organizes information published on various retail and review sites. Product details such as quantity, storage method, and ingredients are subject to change. Please check the seller’s listing for the latest information.
Comments on taste or quality are summarized from third-party posts cited with their source, and are not Ochinity’s own evaluation. Our approach to writing articles is described in our Editorial Policy.
Alcohol is for those aged 20 and over. Drinking by anyone under 20 is prohibited by law in Japan.
Information as of: October 3, 2026 / Sources: Rakuten Ichiba “地酒の加登屋” product page, Amazon product page, Asahi-Shuzo “久保田 萬寿” official page, Rakuten customer reviews, Consumer Affairs Agency, Japan, “About Allergen Labeling”
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