The “蒜山” (Hiruzen) in the product name is a name for the product as a whole; the origin of the raw milk is not shown in the ingredients section of the product page and is not confirmed (the manufacturer is located in Hiruzen, Maniwa City, Okayama Prefecture, and the place of processing, that is, the factory location, is not confirmed). This product is a chilled set of 100ml × 10 yogurt cups, and the best-before date is stated as “18 days from manufacture.” Because it can be hard to decide before buying how many people will eat it and over how long, and whether it works as a gift, this article organizes the publicly available product information and Rakuten Ichiba reviews into five points: quantity, shelf life, ingredient labeling, suitability as a gift, and reviews.
What We Confirmed
- Quantity and roughly how many servings
- 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 | Hiruzen Jersey Yogurt (蒜山ジャージーヨーグルト) 100ml × 10 cups (岡山産直工房) |
|---|---|
| Name | Fermented milk (はっ酵乳)Source: product description on the Rakuten Ichiba product page (viewed October 10, 2026) |
| Amount | 100ml × 10 cups (approx. 1250g per box)Source: same as above |
| Storage Method | Keep refrigerated at 10°C or belowSource: same as above |
| Best-Before Date | 18 days from manufacture (as stated on the Rakuten Ichiba product page as of October 10, 2026). Please also check the label on the product you receiveSource: same as above |
| Raw Material Origin | Not confirmed (the origin of the raw milk is not shown in the ingredients section of the product page) |
| Place of Processing | Not confirmed (the manufacturer’s address is Hiruzen Nakafukuda, Maniwa City, Okayama Prefecture, but it is not stated to be the factory location) |
| State / How to Eat (Whether Cooking Is Required) | Fermented milk (はっ酵乳). We could not find any guidance from the seller on whether heating is required. According to the shop’s description, a feature of this product is its rich yellow cream layerSource: Rakuten Ichiba product page (viewed October 10, 2026) |
| Shipping | Yamato Transport (refrigerated delivery). Delivery is not available to some areas of Hokkaido and Okinawa (as stated in the product name)Source: product description and product name on the Rakuten Ichiba product page |
| Manufacturer | 蒜山酪農農業協同組合 (956-222 Hiruzen Nakafukuda, Maniwa City, Okayama Prefecture)Source: product description on the Rakuten Ichiba product page |
| Shop | 岡山産直工房 (Rakuten Ichiba) |
Prices change, so they are not listed here. Please check the latest price and stock at the link above.
Ingredients and Allergen Labeling
The ingredients are listed as “raw milk, sugar / flavoring” (product type: fermented milk (はっ酵乳); milk solids-not-fat 8.5%; milk fat 4.0%). The nutrition facts per cup (100ml) are: energy 104kcal, protein 3.7g, fat 4.3g, carbohydrates 12.4g, salt equivalent 0.1g, calcium 128 (no unit is shown for calcium on the product page).
Source: product description on the Rakuten Ichiba product page (viewed October 10, 2026)
We could not find a separate allergen labeling section on the product page, so allergen labeling is not confirmed. Because the ingredients include raw milk, people with a milk allergy may not be able to eat this product. Before buying, please be sure to check the official labeling, and also check the food information label on the product when it arrives.
Reference: Consumer Affairs Agency, Japan, “About Allergen Labeling” (accessed October 10, 2026)
Five Things to Check Before Buying
| Item to Check | For This Product | Basis |
|---|---|---|
| 1. Quantity / servings | 100ml × 10 cups (approx. 1250g per box). No serving count is shown on the product page, so this is not confirmed | Product page description |
| 2. Storage and shelf life | Keep refrigerated at 10°C or below. The best-before date is 18 days from manufacture (as stated on Rakuten Ichiba as of October 10, 2026) | Product page description |
| 3. Ingredients and allergen labeling | Ingredients: raw milk, sugar / flavoring. No separate allergen labeling section was found, so this is not confirmed | Product page description |
| 4. Suitable as a gift? | No information on noshi (gift wrapping label) inscriptions could be confirmed. Gift wrapping, message cards, and gift stickers are mentioned. The shop states that documents showing the price are not included | Information images on the product page (viewed October 10, 2026) |
| 5. Review trends | Rakuten Ichiba rating: 4.7/5 (173 reviews). Trends are summarized in the “What Public Reviews Say” section below | Rakuten customer reviews (viewed October 10, 2026) |
Suitable as a Gift?
We have organized, item by item, what we could confirm from the information images on the product page (source: information images on the Rakuten Ichiba product page, viewed October 10, 2026).
- Noshi: We could not confirm any information on noshi support or the types of inscriptions available. The product name includes words such as oseibo (year-end gift), uchi-iwai (return gift), and okaeshi (gift in return), but we have not confirmed these as information about noshi.
- Wrapping: The shop states that it accepts gift wrapping and asks customers to cooperate with simple packaging. Gift wrapping is chosen from an option field at the time of purchase, and the shop also states that the item is shipped chilled.
- Message card / gift sticker: The shop states that it will attach a message card you can choose and a gift sticker.
- Documents showing the price: The shop states that items showing the price, such as delivery slips and receipts, are not included in the package. If you need a receipt, you are asked to enter this in the notes field.
- Gift box / name printing: Could not be confirmed.
- Shipping restrictions: The item is shipped by refrigerated delivery, and the product name states that delivery is not available to some areas of Hokkaido and Okinawa. Please check on the purchase screen whether you can specify a delivery date or time slot.
Among the reviews we read, several posts mentioned using it as a gift for a father or an acquaintance (source: Rakuten customer reviews, viewed October 10, 2026).
What Public Reviews Say
We have organized the product reviews on Rakuten Ichiba by point. The rating figures are as of the time we viewed them and may change afterward.
| Site | Rating | Reviews | Date Viewed |
|---|---|---|---|
| Rakuten customer reviews (product page) | 4.7 / 5 | 173 | October 10, 2026 |
Rating breakdown: 5★ 131 / 4★ 35 / 3★ 5 / 2★ 1 / 1★ 1 (as shown on Rakuten Ichiba, viewed October 10, 2026)
What we read: the first 59 reviews in Rakuten’s default order (posted November 2010 to July 2026; latest July 2026), plus all reviews filtered to 1★, 2★, and 3★ (1★: 1, 2★: 1, 3★: 5; posted September 2011 to May 2021), 66 in total. These are trends within what we read and may not reflect the product’s current condition.
What Reviewers Praise
Two-layer structure
About 29 of the 66 reviews we read (6 of them from the past 2 years) mentioned the two-layer structure, with a rich cream layer on top and a lighter layer below. Some wrote that they buy it for the top layer or that their children like it.
Sweetness and acidity
About 19 reviews (1 of them from the past 2 years) said it was easy to eat because it is not too sweet and the acidity is mild.
Well received as a gift
13 reviews (7 of them from the past 2 years) said they used it as a gift or ordered it as a present. Some wrote that they have repeatedly chosen it as a birthday gift for their father, or that they were grateful the shop arranged delivery in time for Valentine’s Day.
Repeat purchases
About 22 reviews (5 of them from the past 2 years) said they had bought it many times.
Source: Rakuten customer reviews (viewed October 10, 2026)
What Reviewers Note
Different from expectations
6 of the 7 reviews rated 1★ to 3★ said it was not as good as they had expected, lighter than they had imagined, or not to their taste (all posted in 2011–2012). The one 1★ review (2021) said that, on the product they received, the creamy substance on the surface had stuck to the lid. Within what we read, there were no reviews rated 3★ or lower from the past 2 years.
Texture of the top layer
3 of the 66 reviews we read mentioned that the top layer lingers in the mouth or that opinions on it are divided (all posted in 2011 or earlier).
How to check: The shop’s description is summarized in the “State / How to Eat (Whether Cooking Is Required)” row of the “Basic Information” section of this article.
Added sugar and flavoring
3 of the 66 reviews we read said they were concerned about the added sugar or flavoring, or wished there were a sugar-free version (1 in 2021, 2 in 2011–2012).
How to check: The labeling in the ingredients section is listed in the “Ingredients and Allergen Labeling” section of this article.
Source: Rakuten customer reviews (viewed October 10, 2026)
Who It Suits / Who Should Be Careful
Who It Suits
- Want to receive 100ml × 10 cups of yogurt by refrigerated delivery
- Want to try the two layers, the cream layer on top and the layer below (a point mentioned in many reviews)
- Want to add gift wrapping or a message card to a gift (within what the shop states)
Who Should Be Careful
- Have a milk allergy (the ingredients include raw milk; allergen labeling is not confirmed)
- Want to plan how long it will take to finish, since the best-before date is 18 days from manufacture
- Plan to give it with a noshi inscription (no information could be confirmed)
- Are concerned about added sugar or flavoring (sugar and flavoring are listed in the ingredients section)
- Live in Hokkaido or Okinawa (delivery is not available to some areas)
Prices, stock, shipping fees, and delivery dates are subject to change. This article’s information-as-of date is October 10, 2026. Please be sure to check the listing at the link before purchasing.
This article contains affiliate links (advertising). Editorial Policy
Summary
- Contents: 100ml × 10 cups, keep refrigerated. The best-before date is stated as 18 days from manufacture (as stated on Rakuten Ichiba as of October 10, 2026)
- Ingredients: raw milk, sugar / flavoring. Separate allergen labeling was not found on the product page and is not confirmed, so if you have a milk allergy, check the official labeling before buying
- Gift wrapping, message cards, and gift stickers are mentioned, but noshi inscriptions could not be confirmed
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 10, 2026 / Sources: Rakuten Ichiba “岡山産直工房” product page, Rakuten customer reviews, Consumer Affairs Agency, Japan, “About Allergen Labeling”
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