Dassai Junmai Daiginjo 45 comes in a 1800ml isshobin (a large 1.8-liter bottle), so it is the kind of product you will want to check before buying: how it tastes, what the listing says about storage and shelf life, and whether it works as a gift. In this article, we have organized the information into 5 points—quantity, ingredient labeling, suitability as a gift, and reviews—based on what is stated on the Rakuten Ichiba product page and on Rakuten customer 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. Please also do not drink before or while driving.
What We Confirmed
- Quantity and the seller’s description of the taste
- 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 page. However, the “not confirmed” labels and any notes we add are our own.
| Product Name | 獺祭 純米大吟醸 45 (Dassai Junmai Daiginjo 45, 1800ml)Source: product name on the Rakuten Ichiba product page (酒楽SHOP) (viewed October 8, 2026). The product name also includes words describing uses or evaluations, but we do not quote them in this article |
|---|---|
| Name | Junmai daiginjo (a special designation class of sake)Source: product name and product description on the Rakuten Ichiba product page |
| Amount | 1800ml (isshobin, 1.8L)Source: product name on the Rakuten Ichiba product page |
| Alcohol Content | 15–16%Source: product information section on the Rakuten Ichiba product page (as written by the shop) |
| Rice Variety / Polishing Ratio | The rice used is Yamada Nishiki, and the polishing ratio is 45%Source: same as above |
| Taste (Seller’s Description) | The product description says it is a sake made from Yamada Nishiki rice polished down to 45%, characterized by sweetness and aroma derived from the rice. The sake meter value (nihonshudo) is listed as +3 and the acidity as 1.5. It is also listed in a category for sake served chilledSource: product description, product information section, and category listing on the Rakuten Ichiba product page |
| Storage Method | Not confirmedWe could not find a storage method on the product page (there is a note saying “クール便：夏期必要” [chilled delivery: required in summer]) |
| Best-Before Date | Not confirmedWe could not find this on the product page |
| Raw Material Origin | Not confirmedThe rice variety (Yamada Nishiki) is stated, but we could not find where it was grown |
| Place of Processing | Not confirmedThe product name and the brewery (kuramoto) field mention Yamaguchi Prefecture |
| State / How to Enjoy (Whether Cooking Is Required) | This is not a product to be heated or cooked; it is an alcoholic drink. The product page is also listed in a category for sake served chilledSource: category listing on the Rakuten Ichiba product page |
| Shipping | The product information section says “クール便 夏期必要” (chilled delivery required in summer). The shop’s guidance recommends choosing chilled delivery during hot periods (roughly July to September). Please check the delivery conditions on the purchase pageSource: product information section on the Rakuten Ichiba product page and the shop’s shipping guidance (viewed October 8, 2026) |
| Purchase Limit | The page states “お一人様3点まで” (up to 3 items per person). The shop asks customers not to buy for resale (including liquor stores), and says orders may be canceled if the shop judges them to be for resaleSource: Rakuten Ichiba product page (viewed October 8, 2026) |
| Authorized Retailer Status | According to the shop’s own statement, it is an authorized retailer. The product page text says “獺祭の正規販売店です” (we are an authorized Dassai retailer), and the product name includes “【正規販売店】” (authorized retailer). This is the shop’s self-description and is not based on confirmation from the brewerySource: Rakuten Ichiba product page (viewed October 8, 2026) |
| Manufacturer | 獺祭 (Dassai), Yamaguchi Prefecture (as written in the “蔵元” [brewery] field of the product information section). The manufacturer’s official name and address are not confirmedSource: product information section on the Rakuten Ichiba product page |
| Notice on Sales Restriction to Those Under 20 | Not confirmedWe could not find this in the product page text. Please check with the seller before purchasing |
| Shop | 酒楽SHOP (Rakuten Ichiba) |
Prices are not listed here because they change. Please check the current price and stock availability at the link above.
Ingredients and Allergen Labeling
Within what we checked, the only raw material stated on the product page is the rice, Yamada Nishiki; we could not find any mention of rice koji or any allergen labeling. The full list of ingredients and the allergen labeling are not confirmed.
If you have allergy concerns, please contact the seller before purchasing or check the food labeling on the product when it arrives.
Reference: Consumer Affairs Agency, Japan, “About Allergen Labeling” (accessed October 3, 2026)
Five Things to Check Before Buying
| What to Check | For This Product | Basis |
|---|---|---|
| 1. Quantity / servings | 1800ml (isshobin). No guide to the number of servings is given | Product description on the product page |
| 2. Storage method and shelf life | Not confirmed (not stated on the page) | Checked the Rakuten Ichiba product page |
| 3. Ingredients and allergen labeling | The rice is stated as Yamada Nishiki. Rice koji and allergen labeling are not confirmed | Product information section on the Rakuten Ichiba product page |
| 4. Suitable as a gift? | The shop’s page has information on noshi (gift wrapping paper) and name printing. There is a paid option for wrapping. The types of inscription and whether a box is included are not confirmed | Listing on the shop’s Rakuten Ichiba page |
| 5. Review trends | Rakuten Ichiba’s rating is 4.75 out of 5 (284 reviews). We read the 3 reviews shown on the product page (posted April to August 2026). They said the taste is consistent, the packing was secure, and it was well received at a gathering or as a gift. With only 3 reviews, this cannot be called a trend. This may not reflect the product’s current condition | Reviews on the Rakuten Ichiba product page (viewed October 8, 2026) |
Suitable as a Gift?
The shop’s page has information on noshi and name printing. However, we could not confirm the types of inscription. Details on wrapping and so on are as follows.
- The top of the shop’s page has information on noshi, name printing, and wrapping (Source: the shop’s Rakuten Ichiba page, viewed October 8, 2026. The listing may change)
- The shop’s menu has items on noshi, name printing, and wrapping (paid) (Source: same as above. We have not checked the detailed conditions)
- Whether a dedicated box or bag is included is not confirmed (we could not find this on the product page)
- We could not confirm anything about message cards
The shop’s page lists many gift occasions, such as ochugen (summer gift), oseibo (year-end gift), and birthdays (Source: Rakuten Ichiba product page). If you are giving it as a gift, checking in advance whether a box is included, the wrapping conditions, and the purchase limit of 3 items per person will help avoid misunderstandings.
It cannot be given as a gift to anyone under 20.
What Public Reviews Say
We have organized the reviews shown on the Rakuten Ichiba product page. Rating figures are as of the time we viewed them and will change.
| Site | Rating | Reviews | Viewed |
|---|---|---|---|
| Rakuten Ichiba (product page, 酒楽SHOP) | 4.75 / 5 | 284 | October 8, 2026 |
We did not obtain the rating breakdown (not confirmed).
What we read: only the 3 reviews shown on the product page (posted April to August 2026). We have not read all 284 reviews. These are trends within what we read, and because the number is small, they may not reflect the product’s current condition.
What Reviewers Praise
Consistent taste and secure packing
1 of the 3 reviews shown said the taste feels the same whenever they drink it, and that it was securely packed and arrived in stable condition (posted August 2026).
Satisfaction at gatherings and as a gift
2 of the 3 reviews shown said they enjoyed it at a gathering with friends (posted May 2026), and that they sent it to someone they are indebted to and it was well received (posted April 2026).
Source: reviews on the Rakuten Ichiba product page (viewed October 8, 2026)
What Reviewers Note
None found in the 3 reviews shown
We could not find any concerns mentioned in the 3 reviews we read. However, that is only 3 reviews, and we have not been able to read any low-rated reviews. This is not confirmed.
How to check: before purchasing, use “すべてのレビューを見る” (see all reviews) on the product page to check low-rated reviews and reviews about delivery.
Source: reviews on the Rakuten Ichiba product page (viewed October 8, 2026)
Who It Suits / Who Should Be Careful
Who It Suits
- Those who want a 1800ml isshobin (aged 20 or over)
- Those who want to try a junmai daiginjo that the seller describes as characterized by sweetness and aroma derived from the rice
- Those who want to give it as a gift after checking the information on noshi and name printing
- Those who plan to drink it chilled
Who Should Be Careful
- Anyone under 20 (drinking is prohibited by law in Japan)
- Those who are pregnant or breastfeeding, or who are about to drive or are driving
- Those who want to know the storage method or best-before date in advance (not confirmed on the product page)
- Those who want to check rice koji or allergen labeling before buying (not confirmed on the product page)
- Those who are counting on it arriving in a box (whether a box is included is not confirmed; there is a paid option for wrapping)
- Those who want to buy 4 or more at once (the page states up to 3 items per person)
*The Amazon link goes to an item with the same manufacturer (獺祭) and the same specifications (純米大吟醸 磨き45, 1800ml), sold by a different seller (Amazon.co.jp). The content of this article is based on the Rakuten Ichiba (酒楽SHOP) product page. Please check the details on the Amazon product page before purchasing.
Prices, stock, shipping fees, and delivery dates are subject to change. This article’s information-as-of date is October 8, 2026. Please be sure to check the listing at the link before purchasing.
This article contains affiliate links (advertising). Editorial Policy
Summary
- It comes in a 1800ml isshobin and is described as a junmai daiginjo with a polishing ratio of 45% and an alcohol content of 15–16%. Drinking by anyone under 20 is prohibited by law in Japan
- We could not confirm the storage method, best-before date, rice koji and allergen labeling, or a notice on sales restrictions to those under 20 on the product page. If these matter to you, check with the seller before purchasing
- There is information on noshi and name printing, but whether a box is included is not confirmed, and there is a paid option for wrapping. The page states a purchase limit of 3 items per person
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.
Information as of: October 8, 2026 / Sources: Rakuten Ichiba “酒楽SHOP” product page and reviews on the product page, Consumer Affairs Agency, Japan, “About Allergen Labeling”
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