Ikura shoyu-zuke — salmon roe marinated in soy sauce — is a food where people’s sense of grain size and saltiness varies widely from person to person, and the product name alone makes it hard to judge how long it keeps or whether it suits a gift. In this article, we organize publicly available product information about Hokkaido-Produced, Superior-Grade Ikura Shoyu-zuke 500g, sold by Echizen Kani Donya “Masuyone,” into five points: amount, storage method, ingredient labeling, gift suitability, and reviews. (The phrase “グルメ大賞2年連覇” [“Gourmet Award, 2 Years Running”] shown in the product name on the Rakuten Ichiba product page is a label the shop has added, and the award’s organizer, category, and timing are not shown on the product page and are not confirmed. “上級品” [“superior-grade”] is also a name the shop has given this product, and the grading criteria are not confirmed. Neither indicates any superiority in quality.)
What We Confirmed
- Approximate amount and number of 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 | [Hokkaido-Produced / Superior-Grade] Ikura Shoyu-zuke 500gThis is the product name shown on the Rakuten Ichiba product page with promotional and search-related terms removed. Source: Rakuten Ichiba product page (accessed September 23, 2026) |
|---|---|
| Name | Ikura Shoyu-zuke (Salmon Roe Marinated in Soy Sauce)Source: Rakuten Ichiba product page (accessed September 23, 2026) |
| Amount | 500g (about 5 servings). A single size, with no other size or weight optionsSource: same as above |
| Storage method | Keep frozen at -18°C or belowSource: Product description on the product page |
| Best-before date | The listing advises eating it within about 1 month (recommended within 1 week) while kept frozen, and within 3 days (kept chilled) after thawing. It notes that home freezers keep a higher temperature than commercial ones, so the product should be eaten sooner rather than laterSource: Product description on the product page |
| Country of origin | Hokkaido (salmon roe)Source: Product description on the product page |
| Place of processing | Not confirmed (neither the product page nor an official site shows a place of processing) |
| Condition/How to eat (whether heating is needed) | Not confirmed (we found no seller guidance on whether heating is needed in the body of the product page) |
| Delivery | Not confirmed. Please check the product page |
| Manufacturer | 有限会社増米商店MY (Tsunai 27-3-5, Tsuruga, Fukui)The product page shows only a “seller” label, with no distinction from a manufacturer or processor. Source: Product description on the product page (accessed September 23, 2026) |
| Shop | Echizen Kani Donya “Masuyone” (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 salmon roe, soy sauce, salt, dried bonito extract, fermented seasoning, sorbitol, seasoning (amino acids, etc.), and sweetener (licorice)Source: Product description on the product page (accessed September 23, 2026).
For allergen labeling, the product page states that the ingredients include wheat, soy, and mackerel in partSource: same as above.
If you have a wheat, soy, or mackerel 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 / servings | 500g (about 5 servings). A single size | Product description on the product page |
| 2. Storage method and shelf life | Keep frozen at -18°C or below. About 1 month (recommended within 1 week) while frozen, and within 3 days (kept chilled) after thawing | Product description on the product page |
| 3. Ingredient and allergen labeling | Ingredients are listed as salmon roe, soy sauce, and more. Allergen labeling states the ingredients include wheat, soy, and mackerel in part | Product description on the product page |
| 4. Whether it’s suitable as a gift | The product name and meta information use gift-oriented wording, but the specifics of noshi (type of inscription), packaging, and message cards are not confirmed | Product page listing |
| 5. Trends in reviews | We read 20 reviews on page 1, sorted by “Standard” (the default) (posting dates ranged from November 2010 to January 2026, with the most recent post in January 2026). This trend may not represent the product’s current state. Rakuten Ichiba’s rating is 4.55/5 (2,690 reviews, retrieved September 23, 2026). Many comments praise the grain size and freshness, while some note variation in grain size and differing impressions of the saltiness | Measured values via the Rakuten API relay and Rakuten customer reviews (September 23, 2026) |
Suitable as a Gift?
The product name and meta information use gift-oriented words such as “Mother’s Day,” “Father’s Day,” “oseibo,” “oseibo (formal),” “gift,” and “present,” suggesting the product is aimed at gift-givingSource: Rakuten Ichiba product page (accessed September 23, 2026).
On the other hand, we found no specific description of noshi (type of inscription), gift-box-style packaging, or message cards in the body of the product page, so all of these are not confirmed.
If you’re considering this as a gift, checking the following with the shop before purchase can help avoid misunderstandings.
- Whether noshi (type of inscription) is supported (not stated)
- Whether gift-box-style packaging is available (not stated)
- Whether a message card can be added (not stated)
- Since it arrives frozen, whether you can specify a date/time the recipient can receive it
What Public Reviews Say
We checked the rating count and average score shown on the Rakuten Ichiba product page, as well as the review posts on the review page (page 1, 20 reviews). 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) | 4.55 / 5 | 2,690 reviews | September 23, 2026 |
What Reviewers Praise
Comments on the large, plump-textured grains and the fresh, odor-free taste stand out. There are also comments that the seasoning is refined and not too strong, that the two separate packs are convenient to use, and that quality holds up well after thawing.
Source: Rakuten customer reviews (20 reviews read, September 23, 2026)
What Reviewers Note
Some reviews point out variation in grain size, and while some say it’s too salty, others say the flavor is too mild. A few posts also mention a fishy smell.
Source: Rakuten customer reviews (20 reviews read, September 23, 2026)
Who It Suits / Who Should Be Careful
Who It Suits
- Care about the size and texture of the ikura grains
- Want to use ikura shoyu-zuke over rice or in seafood rice bowls / chirashi sushi
- Want to keep about a month’s supply frozen
- Are looking for a product with gift-oriented appeal
Who Should Be Careful
- Have a wheat, soy, or mackerel allergy (labeled as included in part)
- Want to confirm the details of noshi (type of inscription), packaging, and message cards before gifting (not confirmed)
- Want to confirm the place of processing or the condition/how to eat (whether heating is needed) before choosing (not confirmed)
- Want to confirm the award’s organizer, category, and timing (not stated on the product page)
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 (y-504P5) 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, we found listing candidates (ASINs) under the same brand name, but the product page itself is access-restricted, so we could not confirm its contents, and whether it is the same product as this article is not confirmed.
This article contains affiliate links (advertising). Editorial Policy
Summary
- The amount is 500g (about 5 servings), a single size. Keep frozen at -18°C or below; about 1 month (recommended within 1 week) while frozen, and within 3 days (kept chilled) after thawing is the guideline
- Allergen labeling states the ingredients include wheat, soy, and mackerel in part. The place of processing and the condition/how to eat (whether heating is needed) are not shown on the product page and are not confirmed
- The product has gift-oriented appeal, but the specifics of noshi (type of inscription), packaging, and message cards are not confirmed. Please check before buying it as a gift
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 Donya ‘Masuyone'” product page, Rakuten API relay, Rakuten customer reviews, Yahoo! Shopping shop page, Consumer Affairs Agency, Japan, “About Allergen Labeling”
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