Trout roe marinated in soy sauce (“masu ikura,” made from pink salmon [karafuto masu] roe) has a name similar to salmon roe (“sake ikura”), which makes it hard to tell the fish species from the product name alone — and the name alone doesn’t say how many servings 500g provides or how long it keeps once opened. In this article, we organize publicly available product information about Echizen Kani Shokunin Kouragumi’s trout roe marinated in soy sauce 500g (about 6 servings; the serving count is an approximate figure given by the seller) into five points: amount, storage method, ingredient labeling, gift suitability, and reviews.
What We Confirmed
- Approximate amount and servings
- Storage method and shelf life
- Ingredient and allergen labeling
- Whether it’s suitable 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 | Trout roe marinated in soy sauce 500g, about 6 servings, all-you-can-eat! “About 6 servings” in the product name is an approximate figure given by the seller, and “all-you-can-eat!” is a name the seller has given this product; the actual amount is 500g (a single size). These do not indicate any superiority in quantity or quality. |
|---|---|
| Name | Ikura Marinated in Soy SauceSource: Rakuten Ichiba product page and Kouragumi official site (same wording, accessed September 23, 2026) |
| Amount | 500g (about 6 servings)Source: same as above |
| Storage method | Keep frozen at -18 degC or belowSource: Product description and official site |
| Best-before date | It is described that, when kept frozen at -18 degC or below, the product should be eaten within about 1 monthSource: Product description and official site |
| Country of origin | Pink salmon (karafuto masu) roe (from the U.S. or Russia)Source: Product description and official site (accessed September 23, 2026) |
| Place of processing | Not confirmed |
| Condition/How to eat (whether heating is needed) | It is described as ready to eat after thawing, with no heating needed. Thawing in the refrigerator for about half a day is the method describedSource: Product description and official site |
| Delivery | The delivery method (which cold-chain category is used) is not confirmed — please check the product page. It is described that a delivery date can be specified starting 4 days after ordering. It is also described as supporting same-day delivery (please check the listing at the time of ordering to see whether it’s available). There is also a note that delivery may not arrive on the specified date/time due to weather or traffic conditionsSource: Product description |
| Manufacturer | Not confirmed (both the product page and official site show only a “seller” label, with no distinction from a manufacturer or processor. The seller is 株式会社伝食) |
| Shop | Echizen Kani Shokunin Kouragumi (DENSHOKU) (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 ingredients are listed as pink salmon (karafuto masu) roe (from the U.S. or Russia), soy sauce, oligosaccharide, salt, fermented rice seasoning, dried bonito extract, sugar / seasoning (amino acids), powdered starch syrup, reduced starch syrup, kelp stock / seasoning (amino acids, etc.)〈Source: Rakuten Ichiba product page and official site (accessed September 23, 2026)〉. The product page also notes that some ingredients may differ depending on the manufacturer.
For allergen labeling, the product page states that the ingredients include wheat, soy, and salmon roe in part〈Source: same as above〉.
If you have a wheat, soy, or salmon roe allergy, please check the labeling above before purchasing, or check the food information label on the product again when it arrives.
Reference: Consumer Affairs Agency, Japan, “About Allergen Labeling” (accessed September 23, 2026)
Five Things to Check Before Buying
| What to check | For this product | Source |
|---|---|---|
| 1. Amount and servings | 500g (about 6 servings). A single size | Product description on the product page and official site |
| 2. Storage method and shelf life | Keep frozen at -18 degC or below. Described as best eaten within about 1 month when frozen. Thawing in the refrigerator for about half a day is the method described | Product description on the product page and official site |
| 3. Ingredient and allergen labeling | Ingredients are listed as pink salmon (karafuto masu) roe, soy sauce, and more. Allergen labeling states the ingredients include wheat, soy, and salmon roe in part | Product description on the product page and official site |
| 4. Whether it’s suitable as a gift | Noshi is offered. The type of inscription and gift-box-style packaging are not confirmed | Product page listing and Rakuten product page JSON data |
| 5. Trends in reviews | We read 16 reviews sorted by “Standard” (the default; sort not specified in the URL) (posting dates ranged from October 15, 2025 to August 29, 2026, with the most recent post on August 29, 2026). This trend may not represent the product’s current state. Rakuten Ichiba’s rating is 4.6/5 (1,800 reviews, retrieved September 23, 2026). Many comments say the roe is small and easy to eat and mention repeat purchases, while some note the grain size or the strength of the soy sauce flavor | Rakuten customer reviews, viewed directly (accessed September 23, 2026) |
Suitable as a Gift?
The product page states that various noshi (gift labels) are available, and noshi support can be confirmed in the Rakuten product page data〈Source: Rakuten Ichiba product page (accessed September 23, 2026)〉.
On the other hand, we found no individual listing of the types of noshi inscription available (such as for oseibo, ochugen, or uchiiwai), or of the types of gift-box-style or simple packaging, so this is not confirmed. The product name and tags include the words “ochugen” and “oseibo,” but these are search keywords and do not indicate which inscription types are supported.
If you’re considering this as a gift, checking the following with the shop before purchase can help avoid misunderstandings.
- Whether you can choose the type of noshi inscription (not stated)
- Whether gift-box-style packaging is available (not confirmed)
- Whether you can specify a date/time the recipient can receive it, since it arrives via frozen delivery
What Public Reviews Say
We checked the rating count and average score shown on the Rakuten Ichiba product page, as well as the reviews published on the review page (16 reviews read). This trend may not represent the product’s current state. These figures reflect the time we viewed them and will change afterward.
| Site | Rating | Number of reviews | Date viewed |
|---|---|---|---|
| Rakuten customer reviews (“Minna no Review”) (product page) | 4.6 / 5 | 1,800 reviews | September 23, 2026 |
What Reviewers Praise
Comments praising the flavor and the small, easy-to-eat grains stand out. There are also comments about repeat purchases every year for occasions like New Year’s, being well received as a gift, and it being convenient that it arrives frozen.
Source: Rakuten customer reviews (accessed September 23, 2026, 16 reviews read)
What Reviewers Note
There are comments noting the grains are smaller compared to salmon roe, and some say the soy sauce seasoning is a bit strong and would prefer it milder.
Source: Rakuten customer reviews (accessed September 23, 2026, 16 reviews read)
Who It Suits / Who Should Be Careful
Who It Suits
- Looking for small, easy-to-eat roe
- Want to use it for seasonal occasions like New Year’s
- Want to give it as a gift with noshi
- Want to keep it frozen and use it a little at a time
Who Should Be Careful
- Want large, firm-textured roe (some reviews say the grains are small)
- Want a milder soy sauce flavor (some reviews say it’s a bit strong)
- Have a wheat, soy, or salmon roe allergy
- Want to specify the type of noshi inscription when gifting (not confirmed)
Prices, stock, shipping fees, and delivery dates are subject to change. This article’s information-as-of date is September 23, 2026. Please be sure to check the listing at the link before purchasing.
The shop name and item number (200062) on Yahoo! Shopping match those on the Rakuten Ichiba product page, but whether the operating company (as shown in the Specified Commercial Transactions Act notice) is the same is not confirmed. On Amazon’s product page, we confirmed that the model number (200062) and brand name (Kouragumi) match the Rakuten Ichiba product page, but whether the seller (selling business) is the same is not confirmed.
This article contains affiliate links (advertising). Editorial Policy
Summary
- Trout roe marinated in soy sauce, 500g (about 6 servings is an approximate figure). It’s described as ready to eat after thawing, with no heating needed
- Store frozen at -18 degC or below, with about 1 month as the guideline. Thawing in the refrigerator for about half a day is the method described
- Allergen labeling states the ingredients include wheat, soy, and salmon roe in part. Noshi is supported, but the type of inscription is not confirmed
Related Pages
This article organizes information publicly available on each retailer’s site. Product details such as amount, storage method, and ingredients are subject to change. Please check the seller’s own listing for the latest information.
Opinions about flavor and quality are summaries of third-party posts with their source noted, and are not Ochinity’s own evaluation. Our approach to writing articles is described in our Editorial Policy.
Information as of: September 23, 2026 / Sources: Rakuten Ichiba “Echizen Kani Shokunin Kouragumi” product page, Kouragumi official site, Rakuten API relay, Rakuten customer reviews, Yahoo! Shopping shop page, Amazon product page, Consumer Affairs Agency, Japan, “About Allergen Labeling”
Comments