This product is trout (masu) roe marinated in soy sauce (ikura), not salmon roe. The seller explains that trout roe has smaller grains than salmon roe, but a richer flavor and a thin skin that does not linger in the mouth (Source: the guide image on the Rakuten Ichiba product page). Note that “Processed in Hokkaido” in the product name refers to where it is processed, not where the roe comes from. The roe is labeled as from Russia or the U.S. (Source: Rakuten Ichiba product description).
You choose between 250g and 500g, and there is also a gift-box option. This article organizes how to choose the size, thawing and storage, ingredient labeling, how easy it is to use as a gift, and the points on which Rakuten Ichiba reviews were split between praise and criticism, based on the product page and publicly available reviews.
What We Confirmed
- Amount and approximate servings
- Storage method and shelf life
- Ingredient 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 | Ikura, trout roe, soy-sauce-marinated ikura 250g-500g, small grains, processed in Hokkaido, ikura marinated in soy sauce, frozen seafood, ikura marinated in soy sauce, Hokkaido, fish roe, seafood, delicious, rice companion, mail-order gourmet, gift, gourmet, seafood, wakeariThis is the product name shown on the Rakuten Ichiba product page, minus the limited-time announcement text and the shipping-fee notation. “Delicious” in the product name is a label the seller added and does not indicate an evaluation of taste. “Processed in Hokkaido” and “Hokkaido” in the product name refer to the place of processing, not where the roe comes from. The reason for “wakeari” in the product name is not stated on the product page and is not confirmed. |
|---|---|
| Name | Not confirmedThe product page has no separate field for the name |
| Amount | 250g / 500g (chosen from a size selection field). A gift-box option is also offered, but the amount inside the gift box is not confirmedSource: Rakuten Ichiba product page (viewed October 1, 2026). The product page does not state how many servings it makes |
| What changes depending on your choice | The size (250g / 500g) and whether it comes in a gift boxSource: purchase field and guide images on the Rakuten Ichiba product page |
| Storage method | Keep frozen at -18 degC or belowSource: Rakuten Ichiba product description |
| Best-before date | About 30 days (keep frozen at -18 degC or below)Source: Rakuten Ichiba product description |
| Country of origin | Trout roe (from Russia or the U.S.)Source: Rakuten Ichiba product description |
| Place of processing | Hokkaido. A guide image on the sales page explains that the roe is separated grain by grain and marinated in soy sauce at a factory in HokkaidoSource: guide image on the Rakuten Ichiba product page |
| Condition/How to eat (whether heating is needed) | The product description says it can be eaten as is after thawing. A guide image advises against thawing it with heat, because this damages the qualitySource: Rakuten Ichiba product description and guide image on the product page |
| Thawing method | Thawing in the refrigerator (chilled compartment) for about half a day is the method described. The guide says that thawing for a long time at room temperature lets the umami flow out as drip. Refreezing after thawing is advised against because it damages the flavorSource: guide image on the Rakuten Ichiba product page |
| Shelf life after thawing | Not confirmedNo statement found on the product page |
| Delivery | Frozen deliverySource: Rakuten Ichiba product description |
| Manufacturer | Not confirmedThe product page shows only 株式会社しおそう商店 (Shioso Shoten Co., Ltd.) as the seller, and no manufacturer is stated |
| Shop | Minato Dining Shioso (港ダイニングしおそう) (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 description lists the ingredients as trout roe (from Russia or the U.S.), starch syrup, soy sauce, powdered starch syrup, fermented rice seasoning, dried bonito extract, sugar, salt, kelp stock, and seasoning (amino acids, etc.). It also states that some of the ingredients include wheat, soy, and ikura. The Rakuten Ichiba product page has no separate allergen labeling field (Source: Rakuten Ichiba product description, viewed October 1, 2026).
On Amazon, there is a 250g product page (single pack only) under the same shop name. It lists ingredients such as starch hydrolysate, sake, hydrolyzed vegetable protein, and vitamin B1, so the items do not match the Rakuten Ichiba labeling. The allergens listed are wheat, soy, and ikura, the same as on Rakuten Ichiba (Source: Amazon product page, viewed October 1, 2026). The ingredients in this article are based on the Rakuten Ichiba listing. If you have a wheat, soy, or ikura allergy, please check the labeling on the product page before purchasing, and check the combined labeling on the product when it arrives.
Reference: Consumer Affairs Agency, Japan, “About Allergen Labeling” (accessed October 1, 2026)
Five Things to Check Before Buying
| What to check | For this product | Source |
|---|---|---|
| 1. Amount and servings | Choose 250g or 500g. The number of servings is not stated. Refreezing after thawing is advised against, so choose a size based on how much you will use at once | Rakuten Ichiba product page and guide images |
| 2. Storage method and shelf life | Keep frozen at -18 degC or below, best-before about 30 days. Shelf life after thawing is not confirmed | Rakuten Ichiba product description |
| 3. Ingredient and allergen labeling | States that wheat, soy, and ikura are included. The ingredient items differ from the Amazon 250g product page | Rakuten Ichiba product description, Amazon product page |
| 4. Whether it works as a gift | Noshi is offered. A gift box can be chosen (described as a paid option). The types of inscription are not confirmed | Rakuten Ichiba product page data and guide images |
| 5. Trends in reviews | Rakuten Ichiba rating is 4.64 / 5 (3,398 reviews). Many comments praise the seasoning and the amount, while others note a fishy smell, small grains, and texture, and most of those criticisms are from posts in 2023 or earlier. We read the first 58 reviews in the “Standard” order (Rakuten’s default) (posted October 8, 2024 to September 13, 2026, with the most recent post on September 13, 2026). We also read 29 and 30 reviews filtered to 1 star and 2 stars (1-star posts from September 2020 to June 2026, 2-star posts from September 2020 to April 2026). This trend may not represent the product’s current state | Rakuten customer reviews (accessed October 1, 2026) |
Suitable as a Gift?
Noshi support can be confirmed in the Rakuten Ichiba product page data. A guide image explains that noshi can be selected as a strip sticker, and that when selected, it is attached to the right side of the shipping label. The types of noshi inscription (such as oseibo and uchiiwai) could not be found and are not confirmed (Source: Rakuten Ichiba product page, viewed October 1, 2026).
The purchase field has a “gift box” option, and a guide image explains that delivery in a gift box is paid. The amount inside the gift box is not confirmed. Wrapping and message cards are not mentioned on the product page, so they are not confirmed.
A guide image says that, separate from the usual handling in which the shipping label is attached directly to the gift box, if you want it handed over directly, you should enter that request in the order notes field. Because the product arrives by frozen delivery, you also need to check when the recipient can receive it.
Among the reviews we read, about 6 posts said it was used as a birthday gift and was well received. On the other hand, there is one post each, from 2023, saying that the sender’s name on a gift delivery was a company name, and that the box was dirty and the packing sloppy even though noshi was requested. In posts from the last two years (October 2024 onward), we found no similar complaints within what we read (Source: Rakuten customer reviews, viewed October 1, 2026).
What Public Reviews Say
We organized the Rakuten Ichiba product reviews by theme. The rating 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) | 4.64 / 5 | 3,398 reviews | October 1, 2026 |
Rating breakdown: 5★ 2,515 / 4★ 671 / 3★ 120 / 2★ 47 / 1★ 45 (as shown on Rakuten Ichiba, viewed October 1, 2026)
What we read: the first 58 reviews in the “Standard” order (Rakuten’s default) (posted October 2024 to September 2026; latest September 2026), plus 29 filtered to 1★ (posted September 2020 to June 2026) and 30 filtered to 2★ (posted September 2020 to April 2026), 117 in total. All 58 of the “Standard” reviews are from the last two years, and the 1★ and 2★ reviews from the last two years (October 2024 onward) number 8 in total. These are trends within what we read and may not reflect the product’s current condition.
What Reviewers Praise
Flavor and seasoning
About 35 of the 58 reviews in the “Standard” order said the seasoning was just right or that it tasted good. Some wrote that they ate it over a bowl of rice (ikura-don).
Rich flavor despite small grains
About 9 of the 58 reviews said the grains are small but the flavor is rich and satisfying, or that they still felt a popping texture even with small grains. Some wrote that they knew the grains were small from the product name or the seller’s guide, and it did not bother them.
Amount and ease of use
About 12 of the 58 reviews said it was generously filled and satisfying, that it was a convenient amount, or that they divide it up and freeze it for use.
Ease of use as a gift
About 6 of the 58 reviews said they used it as a birthday gift and it was well received.
Source: Rakuten customer reviews (accessed October 1, 2026)
What Reviewers Note
Among the 59 reviews we read that were filtered to 1★ and 2★, the number of posts in the last two years (October 2024 onward) for each theme counted here is small, and most are from 2023 or earlier. We write them separately by period.
Fishy smell
About 20 of the 59 reviews in 1★ and 2★ mentioned a fishy smell. Of these, 3 are from the last two years (2 at 1★ and 1 at 2★), and the rest are from 2023 or earlier.
How to check: the thawing method the seller describes is summarized in the “Thawing method” row of “Basic Information” in this article.
Grains smaller than expected
About 12 of the 59 reviews in 1★ and 2★ said the grains were smaller than expected. Of these, 2 are from the last two years. They include comments from people who bought it thinking it was salmon roe and only later noticed it was trout roe.
How to check: the words “masu” (trout) and “small grains” in the product name, and the seller’s explanation that the grains are smaller than salmon roe, are covered at the start of this article and in the “Product name” row of “Basic Information”.
Texture (crushed grains, drip, weak popping feel)
About 12 of the 59 reviews in 1★ and 2★ said the grains were crushed, there was a lot of liquid after thawing, or the popping feel was weak. Of these, 1 is from the last two years.
How to check: the advice against refreezing after thawing is in the “Thawing method” row of “Basic Information”.
Source: Rakuten customer reviews (accessed October 1, 2026)
Who It Suits / Who Should Be Careful
Who It Suits
- Want a rich flavor even if the grains are smaller than salmon roe
- Want to pick 250g or 500g to match how much you will use
- Want to give it as a gift with noshi (if you are not particular about the inscription)
- Can store it in a freezer
Who Should Be Careful
- Care about grain size or a popping texture (some reviews say the grains are small)
- Are bothered by a fishy smell (many past posts mention it)
- Have a wheat, soy, or ikura allergy
- Want to specify the type of noshi inscription when giving it (not confirmed)
- Want to refreeze after thawing (refreezing is advised against)
Prices, stock, shipping fees, and delivery dates are subject to change. This article’s information-as-of date is October 1, 2026. Please be sure to check the listing at the link before purchasing.
Amazon has a 250g product page (single pack only) under the same shop name. Because its size options and ingredient labeling do not match Rakuten Ichiba, we treat it as not confirmed to be the same product and do not link to it.
This article contains affiliate links (advertising). Editorial Policy
Summary
- Trout roe marinated in soy sauce, not salmon roe. The seller describes it as small-grained but rich in flavor, and the small grains drew both praise and criticism in reviews
- Choose 250g or 500g. Keep frozen at -18 degC or below, best-before about 30 days. Thawing in the refrigerator for about half a day is described, and refreezing after thawing is advised against
- The labeling states that wheat, soy, and ikura are included. Noshi is supported but the types of inscription are not confirmed. Complaints about a fishy smell are few in the last two years
Related Pages
This article organizes information publicly available on each retailer’s and review 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.
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 1, 2026 / Sources: Rakuten Ichiba “Minato Dining Shioso” product page, Rakuten customer reviews, Amazon product page, Consumer Affairs Agency, Japan, “About Allergen Labeling”
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