This article covers “Komochi Echizen Amaebi 500g” (sweet shrimp with roe; amaebi is the Japanese name for this sweet shrimp) from the Rakuten shop 越前かに問屋ますよね (Echizen Kani Donya Masuyone; the seller is listed as 有限会社増米商店). Regarding “Echizen” in the product and shop names, the origin of the raw material is labeled as the Sea of Japan [Fukui (Echizen) or Hyogo (San’in)], and we could not find any option on the product page to choose which one you receive. The same shop also sells amaebi without roe, but this article covers the product with roe. We have organized five points—quantity, shelf life, ingredient labeling, suitability as a gift, and reviews—from the Rakuten Ichiba product page and its reviews. Where the product page gives differing figures for the number of shrimp and the size standard, we list both as they are.
What We Confirmed
- Quantity and how many 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 | ますよね 子持ち越前甘えび 500g (Masuyone Komochi Echizen Amaebi, sweet shrimp with roe, 500g) |
|---|---|
| Product type (name) | Sweet shrimp with roe (for sashimi). We could not find any statement on the product page about whether the amount or presence of roe is consistent from shrimp to shrimpSource: “Product contents” section of the Rakuten Ichiba product page (viewed October 3, 2026) |
| Quantity | About 500g. The number of shrimp is stated differently: about 30–40 in the product name and product description, and about 35–40 in an explanatory image on the product page. The Amazon product page says about 35–40Source: Rakuten Ichiba product page (product name, product description, explanatory image) / Amazon product page (viewed October 3, 2026) |
| Size | The product description states that the shrimp are sorted with large size as the standard, but that small to medium sizes may be mixed in depending on the fishing ground and season. The explanatory image states 35–40 medium-size shrimp, that sizes may vary, and that each shrimp is about 10cm long. Whether the standard is large or medium size is stated differently within the product pageSource: Rakuten Ichiba product page (product description, explanatory image) |
| Storage method | Frozen (store at −18℃ or below)Source: product description on the Rakuten Ichiba product page |
| Best-before date | Stated as within 1 month frozen (1 week recommended) and within 1 day refrigerated. The shop advises eating them as soon as possible, because home freezers keep a higher temperature than commercial ones and quality may sufferSource: product description on the Rakuten Ichiba product page (the Amazon product page gives “the same day” as the guideline for refrigerated storage, so the listings differ) |
| Origin of ingredients | Labeled as the Sea of Japan [Fukui (Echizen) or Hyogo (San’in)]. We could not find any option to choose which one you receive. Note that the product name shown on the Rakuten product page says “福井県産” (from Fukui Prefecture), which is expressed differently from the origin fieldSource: product description on the Rakuten Ichiba product page |
| Place of processing | Not confirmed |
| Condition / how to eat (cooking needed?) | The product contents section says “刺身用” (for sashimi) and “生／冷凍” (raw / frozen). We could not find any guidance on whether cooking is needed in the product descriptionSource: product description on the Rakuten Ichiba product page |
| How to thaw | If you cannot eat them all at once, the shop says to quickly thaw only the amount you need under running water to melt the glaze of ice on the surface. It also says the shrimp are packed loose, one by one, that the rest should be kept frozen, and that refreezing after fully thawing is not possible because the flavor deteriorates. The thawing photos in the explanatory image carry a note that they show amaebi without roe. The thawing time when eating the whole pack and steps for thawing in the refrigerator could not be found on the Rakuten product page and are not confirmedSource: Rakuten Ichiba product page (explanatory image) |
| Shipping | Stated as eligible for “Asuraku,” Rakuten’s next-day shipping service (orders placed by 11:00; Hokkaido, Kyushu, Okinawa Prefecture, and some remote islands are excluded). The name of the shipping method and the estimated shipping date are not confirmedSource: product description on the Rakuten Ichiba product page |
| Manufacturer | Not confirmed (the product page lists only the seller, 有限会社増米商店)Source: product description on the Rakuten Ichiba product page |
| Shop | 越前かに問屋ますよね (Rakuten Ichiba) |
Prices change, so we do not list them. Please check the latest price and stock at the link above.
The product name shown on the Rakuten product page includes the claim “グルメ大賞エビ部門3度受賞” (won the shrimp category of the Gourmet Award three times). We could not confirm the organizer or dates of this claim on the product page, so it is not confirmed (a claim by the seller).
Ingredients and Allergen Labeling
We could not find the ingredient names, allergen labeling, or manufacturer on the Rakuten Ichiba product page. This item is not confirmed. The product name shown on the Rakuten product page includes “無添加・無着色” (no additives, no coloring), and an explanatory image states that no antioxidants are used (both are claims by the seller).
The Amazon product page lists ホッコクアカエビ (northern shrimp) as the ingredient and shrimp as an allergen (viewed October 3, 2026). Shrimp is one of the “specified raw materials” whose labeling is mandatory under Japan’s Food Labeling Act. If someone with a crustacean allergy will eat this, please contact the seller before purchasing or check the food label on the delivered product.
Reference: Consumer Affairs Agency, Japan, “About Allergen Labeling” (viewed October 3, 2026)
Five Things to Check Before Buying
| Item to check | For this product | Basis |
|---|---|---|
| 1. Quantity / servings | About 500g, about 30–40 shrimp (the explanatory image says about 35–40). The number of servings is not confirmed | Rakuten Ichiba product page. The number of shrimp and the size standard are stated differently |
| 2. Storage and shelf life | Frozen (−18℃ or below). Stated as within 1 month frozen (1 week recommended) and within 1 day refrigerated | Product description on the Rakuten Ichiba product page |
| 3. Ingredients and allergen labeling | Not confirmed on the Rakuten product page. The Amazon product page lists shrimp | Rakuten Ichiba and Amazon product pages (viewed October 3, 2026) |
| 4. Suitable as a gift? | Noshi (gift wrapping label) available (sticker-type noshi). No mention of wrapping or message cards found | Rakuten Ichiba product page (noshi option, explanatory image) |
| 5. Review trends | Rated 4.62/5 on Rakuten Ichiba (6,803 reviews). Trends are summarized in the “What Public Reviews Say” section (we read 120 reviews, which may not reflect the current state of the product) | Rakuten customer reviews (viewed October 3, 2026) |
Suitable as a Gift?
The Rakuten product page states that noshi (gift wrapping label) is available. It is a sticker-type noshi, selected on the checkout screen. An explanatory image lists examples of inscriptions (on noshi), such as oseibo (year-end gift), summer greetings, New Year’s greeting (gift), get-well wishes, Respect for the Aged Day, Mother’s Day, Father’s Day, presentation, thanks, commemorative gift, birthday, and wedding anniversary (viewed October 3, 2026).
- The shop states that if you order with Asuraku, time-slot delivery, noshi settings, and bank transfer cannot be used
- The box size is stated as about 17cm long × about 22cm wide, and the shop also notes that the package may differ
- We could not confirm on the product page whether wrapping, message cards, or name printing are available, or whether names can be printed on the noshi
What Public Reviews Say
We organized the Rakuten Ichiba product reviews by topic. Rating figures are as of the time we viewed them and will change afterward.
| Site | Rating | Reviews | Date viewed |
|---|---|---|---|
| Rakuten customer reviews (product page) | 4.62 / 5 | 6,803 | October 3, 2026 |
Rating breakdown: 5★ 4,828 / 4★ 1,542 / 3★ 295 / 2★ 69 / 1★ 69 (as shown on Rakuten Ichiba, viewed October 3, 2026)
What we read: the first 60 reviews in the default sort order (posted October 2024 to September 2026, the latest in September 2026) and 30 each filtered to 1★ and 2★ (posted February 2013 to April 2026), 120 in total. These are trends within what we read and may not reflect the current state of the product.
What Reviewers Praise
Sweetness and smooth texture
About 15 of the 60 reviews in the default sort order mentioned that the meat was sweet or had a smooth, melting texture.
Comes with roe
About 10 of the 60 reviews mentioned that the shrimp had roe or that they could eat even the miso (the soft innards) in the head. About 8 of those mentioned the miso.
Quantity and size
About 13 of the 60 reviews mentioned that there were plenty or that they were larger than the amaebi seen at supermarkets.
Use as a gift
About 9 of the 60 reviews mentioned that it was well received as a gift, such as an oseibo (year-end gift). About 14 mentioned buying it again every year.
Source: Rakuten customer reviews (viewed October 3, 2026). Counts are approximate figures tallied by our staff
What Reviewers Note
Size and number of shrimp
About 19 of the 60 1★ and 2★ reviews (about 2 of them posted in the last two years) mentioned that the shrimp were small, uneven in size, fewer in number, or different from the photos.
How to check: the shop’s information on the number of shrimp and size is summarized in the “Quantity” and “Size” rows of “Basic Information” in this article.
Odor, freshness, and freezer burn
About 20 of the 60 1★ and 2★ reviews (about 3 of them posted in the last two years) mentioned an odor, loss of freshness, freezer burn, mushy meat, or discoloration.
How to check: the shop’s information on storage and shelf life is summarized in the “Storage method” and “Best-before date” rows of “Basic Information.”
Difficulty thawing
About 6 of the 60 reviews in the default sort order and about 6 of the 60 1★ and 2★ reviews (about 4 posted in the last two years) mentioned that the shrimp were frozen together and hard to separate, or that peeling them was hard work.
How to check: the shop’s thawing instructions are summarized in the “How to thaw” row of “Basic Information.”
Source: Rakuten customer reviews (viewed October 3, 2026). Counts are approximate figures tallied by our staff
Who It Suits / Who Should Be Careful
Who It Suits
- People looking for amaebi with roe in a product labeled for sashimi
- People who want to take out and eat only what they need (the shop explains thawing the needed amount under running water)
- People who want to send it as a gift with a noshi (sticker-type noshi)
- People who can plan to eat them soon after delivery (1 week frozen is the recommended period)
Who Should Be Careful
- People with a shrimp allergy (allergen labeling is not confirmed on the Rakuten product page, so contact the seller)
- People who want a consistent number or size of shrimp (the listings differ, and small to medium sizes may be mixed in)
- People who want steps for thawing the whole pack at once (not stated on the Rakuten product page)
- People who want to use time-slot delivery or noshi settings with Asuraku (the shop says these cannot be used with Asuraku orders)
Prices, stock, shipping fees, and delivery dates are subject to change. This article’s information-as-of date is October 3, 2026. Please be sure to check the listing at the link before purchasing.
This article contains affiliate links (advertising). Editorial Policy
Summary
- About 500g; the number of shrimp is stated differently as about 30–40 (about 35–40 in the explanatory image), and the size standard is also stated as either large or medium
- Store frozen at −18℃ or below; frozen storage is stated as within 1 month (1 week recommended). The shop explains thawing only what you need under running water
- No ingredient or allergen labeling was found on the Rakuten product page, while the Amazon product page lists shrimp. If you have a shrimp allergy, check with the seller before purchasing
Related Pages
This article organizes information published on various retail 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 3, 2026 / Sources: Rakuten Ichiba “越前かに問屋ますよね” product page, the Amazon page for the same product, Rakuten customer reviews, Consumer Affairs Agency, Japan, “About Allergen Labeling”
![Featured image. Product photo of Masuyone Echizen Amaebi without roe 500g (small size, wakeari): reddish shell-on sweet shrimp (amaebi) with heads and long antennae, piled tightly across a black bowl. Text the shop placed in the image: “訳ありでお得な［越前甘えび］をたっぷりとお届け。” (a generous helping of the good-value wakeari [Echizen amaebi]) and “［訳あり］子なし越前甘えび 500g” ([wakeari] Echizen amaebi without roe, 500g)](https://ochinity.com/wp-content/uploads/2026/10/eye-ebi-masu10000332-en-300x158.webp)
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