With dashi shoyu (soy sauce with dashi, Japanese soup stock), it is easy to end up choosing without knowing how it differs from regular soy sauce, what it can be used for, or how to store it after opening. In this article, we organized what the Rakuten Ichiba product page and public reviews say about 鎌田醤油 Dashi Shoyu 500ml × 4 into five points: quantity, storage method and shelf life, ingredient labeling, suitability as a gift, and reviews.
What We Confirmed
- Quantity and number of 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 | 鎌田醤油 だし醤油 500ml×4本入 (鎌田醤油 Dashi Shoyu, 500ml × 4)Source: listed with the search keywords removed from the product name shown on the Rakuten Ichiba product page (viewed October 13, 2026) |
|---|---|
| Name | not confirmed (No name field was found in the product description on Rakuten Ichiba) |
| Amount | 500ml × 4Source: product description on the Rakuten Ichiba product page (viewed October 13, 2026) |
| Storage Method | The label says to store it at room temperature away from direct sunlight before openingSource: product description on the Rakuten Ichiba product page (viewed October 13, 2026) |
| Best-Before Date | The best-before period is stated as 1.5 years. We found no statement of when the 1.5 years is counted from, so this is not confirmedSource: product description on the Rakuten Ichiba product page (viewed October 13, 2026) |
| After Opening | The product description advises closing the cap after opening, storing it upright in the refrigerator, and using it soonSource: product description on the Rakuten Ichiba product page (viewed October 13, 2026) |
| Raw Material Origin | not confirmed (No field for the origin of raw materials was found. In the ingredient labeling, the soy sauce is marked “国内製造” [made in Japan])Source: product description on the Rakuten Ichiba product page (viewed October 13, 2026) |
| Place of Processing | not confirmed (No manufacturing-site label was found. The seller’s address is listed as Sakaide City, Kagawa Prefecture)Source: product description on the Rakuten Ichiba product page (viewed October 13, 2026) |
| State / How to Eat (Whether Cooking Is Required) | A liquid seasoning. We found no guidance on whether heating is required. As directions for use, the product description says it can be used as is as a pouring soy sauce or to season stir-fries, and diluted for simmered dishes, mentsuyu (noodle dipping sauce), and the likeSource: product description on the Rakuten Ichiba product page (viewed October 13, 2026) |
| Shipping | The page shows that it is scheduled to ship within 3–4 business days (viewed October 13, 2026). We found no statement of the shipping temperature zone, so this is not confirmedSource: Rakuten Ichiba product page |
| Manufacturer | No manufacturer label was found. The seller is listed as 鎌田醤油株式会社 (1-6-35 Honmachi, Sakaide City, Kagawa Prefecture)Source: product description on the Rakuten Ichiba product page (viewed October 13, 2026) |
| Shop | 鎌田醤油公式ショップ (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
The Rakuten Ichiba product page shows the following ingredient labeling.
Soy sauce (contains wheat and soybeans) (made in Japan), mirin, salt, glucose-fructose syrup, starch syrup, sugar, dried mackerel flakes (saba-bushi), dried bonito flakes (katsuobushi), hydrolyzed protein, kelp (kombu) / seasoning (amino acids, etc.), alcohol
Source: product description on the Rakuten Ichiba product page (viewed October 13, 2026)
For allergens, wheat is listed under mandatory labeling, and mackerel and soybeans under recommended labeling (Source: the allergen field in the same product description). If you have allergies, be sure to ask the shop before buying or check the label on the product when it arrives.
Reference: Consumer Affairs Agency, Japan, “About Allergen Labeling” (accessed October 13, 2026)
Five Things to Check Before Buying
| What to Check | For This Product | Basis |
|---|---|---|
| 1. Amount and Number of Servings | 500ml × 4. There is no guideline for the number of servings because this is a seasoning | Product description on the Rakuten Ichiba product page |
| 2. Storage Method and Shelf Life | Room temperature before opening; store upright in the refrigerator after opening. The best-before period is stated as 1.5 years (when it is counted from is not confirmed) | Product description on the Rakuten Ichiba product page (viewed October 13, 2026) |
| 3. Ingredients and Allergen Labeling | Made with dried mackerel flakes, dried bonito flakes, and kelp. Allergens: wheat (mandatory labeling); mackerel and soybeans (recommended labeling) | Product description on the Rakuten Ichiba product page (viewed October 13, 2026) |
| 4. Suitable as a Gift | When buying, you can choose whether to add noshi (a Japanese gift label) and its inscription, and whether to have it wrapped. Gift box and message card: not confirmed | Purchase options on the Rakuten Ichiba product page (viewed October 13, 2026) |
| 5. Review Trends | Rakuten Ichiba’s rating is 4.86 out of 5 (793 reviews, retrieved October 13, 2026). The following is the trend from reading the first 60 reviews in the default sort order, plus the 1 review filtered to 1★ and the 8 reviews filtered to 3★ (there are 0 reviews at 2★); the posts date from October 2016 to October 2026, and the latest post is from October 2026. This trend may not reflect the product’s current state. Many comments say they have kept using it for years or that it works with a variety of dishes, while some mention the price or felt that the soy sauce flavor was stronger than the dashi | Rakuten customer reviews (viewed October 13, 2026) |
Suitable as a Gift?
In the purchase options on the Rakuten Ichiba product page, you can choose whether to add noshi, and the inscription is selected from the following: 無地のし (plain noshi), 御祝 (congratulations), 内祝 (return gift), 快気祝 (gift celebrating recovery from illness), 御礼 (thanks), 粗品 (small gift), 志 (yellow and white; a memorial return gift), 御供 (offering), 粗供養 (return gift for a memorial service), 満中陰志 (return gift after the 49-day mourning period), 母の日 (Mother’s Day), and other. You can also choose wrapping paper or no wrapping. We could not confirm whether a gift box, a message card, or name printing is available (Source: purchase options on the Rakuten Ichiba product page, viewed October 13, 2026).
Among the reviews we read, 9 of the 60 in the default sort order said they used it as a Father’s Day gift, a gift for family or acquaintances, or a return gift. These are trends within what we read and may not reflect the product’s current condition (Source: Rakuten customer reviews, viewed October 13, 2026).
If you are considering it as a gift, checking the following points on the product page before purchasing can help avoid misunderstandings.
- How to choose the noshi inscription and whether to have it wrapped (selected in the purchase options)
- Whether a gift box or message card can be added (not listed on the product page)
- Whether it suits how the recipient will use it, since the product description advises storing it upright in the refrigerator after opening
What Public Reviews Say
Below is a summary of the product reviews on Rakuten Ichiba, organized by theme. The rating figures are as of the time we viewed them and may change afterward.
| Site | Rating | Reviews | Viewed |
|---|---|---|---|
| Rakuten customer reviews (product page) | 4.86 / 5 | 793 | October 13, 2026 |
Rating breakdown: 5★ 694 / 4★ 90 / 3★ 8 / 2★ 0 / 1★ 1 (as shown on Rakuten Ichiba, viewed October 13, 2026)
What we read: the first 60 reviews in the default sort order (posted December 2024 to October 2026; latest October 2026), the 1 review filtered to 1★ (posted October 2016), and the 8 reviews filtered to 3★ (posted July 2017 to March 2025; there are 0 reviews at 2★), 69 in total. These are trends within what we read and may not reflect the product’s current condition.
What Reviewers Praise
Used for many years
24 of the 60 reviews in the default sort order said they have used it for many years, buy more before running out, or have used it since their parents’ generation (all posted in the past two years).
Works with a variety of dishes
18 of the 60 posts said they use it widely, from cold tofu and as a pouring soy sauce to simmered dishes, udon broth, and takikomi gohan (rice cooked with seasonings and ingredients) (all from the past two years).
Dashi flavor
6 of the 60 posts felt it had a dashi flavor with little peculiarity or off-taste (all from the past two years).
Gifts and return gifts
9 of the 60 posts said they used it as a Father’s Day gift, a gift for family or acquaintances, or a return gift (all from the past two years).
Source: Rakuten customer reviews (viewed October 13, 2026)
What Reviewers Note
Price
5 of the 69 reviews we read said they felt the price was somewhat high (4 of the 60 in the default sort order and 1 of the 8 at 3★; 4 of them from the past two years). In addition, the 1 review at 1★ (posted in 2016) also mentions the price.
Strength of flavor and ingredients
A total of 4 posts said they felt the soy sauce flavor was stronger than the dashi, or that they add dashi to adjust it to their taste, or mentioned that the ingredients include sugars (such as sugar) and alcohol (3 of the 60 in the default sort order and 1 of the 8 at 3★; 3 of them from the past two years).
How to check: The full ingredient labeling is given in the “Ingredients and Allergen Labeling” section of this article.
Source: Rakuten customer reviews (viewed October 13, 2026)
Who It Suits / Who Should Be Careful
Who It Suits
- Want one soy sauce with dashi for everything from pouring soy sauce to simmered dishes and mentsuyu (as described in the shop’s directions for use)
- Want to stock up on four 500ml units at once (labeled for room-temperature storage before opening)
- Want to give it as a gift with your choice of noshi inscription and wrapping
Who Should Be Careful
- Have an allergy to wheat, mackerel, or soybeans (listed in the allergen labeling)
- Looking for a dashi shoyu without sugars or alcohol (listed in the ingredients)
- Find it hard to make room to keep it upright in the refrigerator after opening
- Want to confirm in advance when the best-before period is counted from (no statement was found)
Prices, stock, shipping fees, and delivery dates are subject to change. This article’s information-as-of date is October 13, 2026. Please be sure to check the listing at the link before purchasing.
This article contains affiliate links (advertising). Editorial Policy
Summary
- The amount is 500ml × 4. The product description advises room-temperature storage before opening, and storing upright in the refrigerator and using it soon after opening. The best-before period is stated as 1.5 years, but when it is counted from is not confirmed
- The ingredients include dried mackerel flakes, dried bonito flakes, and kelp; for allergens, wheat is under mandatory labeling, and mackerel and soybeans under recommended labeling
- The noshi inscription and wrapping can be chosen in the purchase options. Among the 69 reviews we read, many mention long-term use or the wide range of uses, while some are concerned about the price or the strength of the flavor (this may not reflect the product’s current condition)
Related Pages
This article organizes information published on various retail sites 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 13, 2026 / Sources: Rakuten Ichiba “鎌田醤油公式ショップ” product page, Rakuten customer reviews, Consumer Affairs Agency, Japan, “About Allergen Labeling”
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