Maguro shutou is a type of shiokara (a salted, fermented seafood preserve), made here from tuna innards, and its name alone doesn’t make clear whether it’s meant to be heated before eating or eaten as is, or whether it’s suitable as a gift. This article organizes the information published on the product page for Maguro Shutou 280g by Shiino Shokuhin (しいの食品) into five points: the amount, storage method, ingredient labeling, suitability as a gift, and reviews.
What We Confirmed
- The amount and roughly how many servings it makes
- Storage method and shelf life
- Ingredients and allergen labeling
- Whether it’s suitable as a gift
- The trend in published 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 | Shiino Shokuhin Maguro Shutou 280g |
|---|---|
| Name (food-labeling category) | ShiokaraSource: Rakuten Ichiba product page (product description). Viewed September 26, 2026 |
| Amount | 280g (jar). Product dimensions 70 x 62 x 125mm. No indication of the approximate number of servings was found on the product pageSource: product description |
| Storage method | Store away from direct sunlight and high heat/humidity (room temperature)Source: product description |
| Best-before date | 360 days from the manufacturing date (unopened)Source: product description |
| Raw material origin | Tuna innards: Japan, Thailand. This is based on the ingredients list; a separate “raw material origin” field was not found on the product pageSource: ingredients list in the product description |
| Place of processing | Not confirmed |
| State / how to eat (whether heating is required) | Not confirmed (no guidance from the seller on whether heating is required was found) |
| Shipping | Shipped directly from the manufacturerSource: product name as listed. Viewed September 26, 2026. The delivery-service category is not confirmed; please check on the product page |
| Manufacturer | Shiino Shokuhin Co., Ltd., 939 Narita, Odawara-shi, KanagawaSource: product description |
| Shop | Chinmiya (珍味や), 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
According to the product page’s product description, the ingredients are listed as tuna innards (Japan, Thailand), salt, lactose, fermentation seasoning, brewed vinegar, sugar, doubanjiang (chili bean paste), powdered vegetables, hydrolyzed protein, chili pepper / seasoning (amino acids, etc.), alcohol, sorbitol, thickening polysaccharides, paprika color, and antioxidant (vitamin C)Source: product description. Viewed September 26, 2026. The allergen labeling states that the product “contains dairy, soy, and apple among its ingredients”Source: same as above. We could not find ingredient or allergen labeling on the same product’s page on the official site, so this has been confirmed only from the product page (Rakuten Ichiba).
The product is stated to contain dairy, soy, and apple. If you have an allergy to any of these foods, please contact the seller before purchasing, or check the food information label on the product once it arrives.
Reference: Consumer Affairs Agency, Japan, “About Allergen Labeling” (accessed September 26, 2026)
Five Things to Check Before Buying
| Point to check | For this product | Source |
|---|---|---|
| 1. Amount and servings | One 280g jar. The approximate number of servings is not confirmed | Product description on the product page |
| 2. Storage method and shelf life | Room temperature (away from direct sunlight and high heat/humidity). Best-before date is 360 days from the manufacturing date (unopened) | Product description on the product page |
| 3. Ingredients and allergen labeling | Ingredients are listed. Allergen labeling states it “contains dairy, soy, and apple among its ingredients” | Product description on the product page |
| 4. Whether it’s suitable as a gift | Noshi support, gift wrapping, and message cards are all not confirmed | Product page / official site’s product page |
| 5. Trend in reviews | 4 reviews on Rakuten Ichiba, average 5.0. A summary of what reviewers say is not confirmed | Rakuten Ichiba product page display (as of September 26, 2026) |
Suitable as a Gift?
We could not confirm support for noshi, wrapping (gift box, simple gift box, gift wrapping), or message cards on either the product page or the official site. This shop does carry other products (such as assortment sets) that explicitly state gift support, but for this product (the 280g single item) we could not confirm any mention of gift support. If you’re considering it as a gift, checking the following with the seller before purchasing can help avoid misunderstandings.
- Whether noshi and wrapping are supported (not stated on the product page)
- The delivery-service category, and whether a delivery date and time can be specified for the recipient
- Whether the recipient will enjoy the distinctive flavor of shiokara (this is a product where checking the recipient’s taste matters for a gift)
What Public Reviews Say
We were unable to access the Rakuten Ichiba review page this time, so a summary of what reviewers say (what’s praised, what’s noted as a concern) is not confirmed. What we could confirm is only the number and rating figures published on the Rakuten Ichiba side.
| Site | Rating | Count | Viewed |
|---|---|---|---|
| Rakuten customer reviews (product page) | 5.0 / 5 | 4 reviews | September 26, 2026 |
Because the number of reviews is small, this rating may not represent the overall trend for this product.
Who It Suits / Who Should Be Careful
Who It Suits
- Looking for a salted, fermented seafood delicacy to go with rice or as a drink pairing
- Wants to try a fermented food made from tuna innards
- Looking for a preserved food that can be stored at room temperature
Who Should Be Careful
- Have an allergy to dairy, soy, or apple (should not eat this product)
- Want to confirm whether it should be heated or eaten as is before buying, since the seller gives no guidance
- Want to use it as a gift and need noshi or gift wrapping
Prices, stock, shipping fees, and delivery dates are subject to change. This article’s information-as-of date is September 26, 2026. Please be sure to check the listing at the link before purchasing.
This article contains affiliate links (advertising). Editorial Policy
Summary
- Comes in a 280g jar. The best-before date is 360 days from the manufacturing date (unopened), and it’s stored at room temperature (away from direct sunlight and high heat/humidity)
- The ingredients are stated to include dairy, soy, and apple. If you have an allergy, please check before purchasing
- We could not confirm any mention of noshi support or gift wrapping. If you’re using it as a gift, please check with the seller before purchasing
Related Pages
This article organizes information published on the Rakuten Ichiba product page. Product details such as the amount, storage method, and ingredients are subject to change. Please check the seller’s current listing for the latest information.
Our approach to writing articles is described in our Editorial Policy.
Information as of: September 26, 2026 / Sources: Rakuten Ichiba “Chinmiya” product page, Consumer Affairs Agency, Japan, “About Allergen Labeling”
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