A discounted “wakeari” chutoro saku can be hard to choose, because it is not clear what makes it wakeari, how many people 500g feeds, or how long it keeps after thawing. This article covers the “Honmaguro Chutoro Saku 500g Wakeari Yoshoku” from Maguro no Kanetomo (まぐろのカネトモ): bluefin tuna chutoro (medium-fatty tuna belly) sold as a saku (a rectangular block cut for slicing), farmed. We sorted the product page and Rakuten customer reviews into five points: amount, shelf life, ingredient labeling, suitability as a gift, and reviews. The product page says the wakeari condition includes irregular shapes, cracks, chips, sinew (suji), blood clots and similar.
What We Confirmed
- Amount and roughly how many servings
- Storage method and shelf life
- Ingredients & allergen labeling
- Suitable as a gift?
- Trends in publicly available 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 | Honmaguro Chutoro Saku 500g Wakeari Yoshoku (本マグロ 中トロ 柵 500g 訳あり 養殖: farmed bluefin tuna, medium-fatty block, 500g, wakeari)This is the name shown on the Rakuten product page, shortened by removing the search keywords |
|---|---|
| Designation | Honmaguro chutoro (farmed) (本鮪中とろ（養殖）)Source: product description on the Rakuten Ichiba product page (accessed October 11, 2026) |
| Amount | About 500g. The shop’s label says 5 to 6 servings (“5人前〜6人前”); the serving count is only a guide, and the product page does not give a breakdownSource: same as above |
| What Makes It Wakeari | The page says it includes irregular shapes, cracks, chips, sinew (suji), blood clots and similarSource: same as above |
| Storage Method | Store frozen (−18°C or below)Source: same as above |
| Best-Before Date | 7 days from the shipping date when kept in the freezer. Eat the same day once thawedSource: same as above |
| Country of Origin | The page lists the origin as Malta and other Mediterranean coastal countries. The ingredient list is Not confirmedSource: same as above |
| Processing Location | The processor’s address is in Fujieda, Shizuoka Prefecture. An explicit statement of the processing location is Not confirmedSource: same as above |
| Condition / How to Eat (Cooking Required?) | The product name includes “冷凍” (frozen). The shop’s catchphrase says it delivers 500g for sashimi. Guidance on whether cooking is required is Not confirmedSource: Rakuten Ichiba product page (shop’s catchphrase) |
| Thawing Method | The page says an instruction sheet for thawing is included. The text of the steps is Not confirmedSource: product description on the Rakuten Ichiba product page |
| Shipping | The delivery method (Cool TA-Q-BIN category) is Not confirmed. Please check the product page. Customers are asked to enter a desired delivery date when ordering. The shop is closed on Saturdays, Sundays, public holidays, the Obon holidays and the year-end and New Year holidaysSource: same as above |
| Noshi / Gifts | We could not confirm on the product page whether noshi (gift wrapping label), wrapping or message cards are availableSource: Rakuten Ichiba product page (accessed October 11, 2026) |
| Manufacturer | Kanetomo Co., Ltd. (株式会社カネトモ) (listed as the processor in the product description)Source: product description on the Rakuten Ichiba product page |
| Shop | Maguro no Kanetomo (まぐろのカネトモ) (Rakuten Ichiba) |
Prices are not listed here because they change. Please check the current price and stock availability at the link above.
Ingredients & allergen labeling
Within what we could check, the product page does not show an ingredient list or allergen labeling. This item is Not confirmed.
If you have an allergy, be sure to check the labeling on the product when it arrives.
Reference: Consumer Affairs Agency, “About Allergen Labeling” (accessed October 11, 2026)
Five Things to Check Before Buying
| Item to Check | For This Product | Basis |
|---|---|---|
| 1. Amount / Servings | About 500g. The shop’s label says 5 to 6 servings (a guide only). One review says it arrived as 4 saku, so the number and size of the saku may not be fixed (our own inference from the reviews) | Product description on the product page, Rakuten customer reviews |
| 2. Storage & Shelf Life | Frozen (−18°C or below). 7 days from the shipping date in the freezer; eat the same day once thawed | Product description on the product page |
| 3. Ingredients & Allergen Labeling | Not confirmed (not stated on the page). Be sure to check the label on the product when it arrives | Checked the Rakuten Ichiba product page |
| 4. Suitable as a Gift? | The product description says it is not suited to gifts and is intended for home use. We could not confirm noshi or wrapping options | Product description on the product page |
| 5. What Reviews Say | Rakuten rating is 4.57/5 (381 reviews). We read the first 60 reviews in the default order (posted October 2025 to October 2026; the latest is from October 2026) and all 10 reviews rated 1 or 2 stars (posted October 2024 to February 2026). Many praise the richness of the fat and the thawing instruction sheet, while comments about sinew stood out. These trends cover only what we read and may not reflect the product’s current condition | Rakuten customer reviews (accessed October 11, 2026) |
Suitable as a gift?
The product description says the item is not suited to gifts and is meant for home use. On the other hand, the product name, catchphrase and keyword field also include words such as “gift” and “for gifts,” so the shop’s labeling is inconsistent. In this article we follow the product description and do not treat it as a gift item.
- Noshi, wrapping, message cards: we could not confirm any statement on the Rakuten product information (accessed October 11, 2026)
- Delivery date: customers are asked to enter a desired date when ordering. The shop is closed on Saturdays, Sundays, public holidays, the Obon holidays and the year-end and New Year holidays, and the page says your requested date may not be met
- Shelf life: 7 days from the shipping date in the freezer; eat the same day once thawed
A few of the reviews we read said the recipient was pleased with it as a gift (source: Rakuten customer reviews, accessed October 11, 2026. This is a trend within what we read and may not reflect the product’s current condition). However, the shop says it is not suited to gifts.
What Public Reviews Say
We organized the Rakuten Ichiba product reviews by theme. The rating figures reflect the time of viewing and will change.
| Site | Rating | Number of Reviews | Date Accessed |
|---|---|---|---|
| Rakuten customer reviews (product page) | 4.57 / 5 | 381 | October 11, 2026 |
Rating breakdown: 5★ 257 / 4★ 100 / 3★ 14 / 2★ 5 / 1★ 5 (as shown on Rakuten Ichiba, viewed October 11, 2026)
What we read: the first 60 reviews in Rakuten’s default order (posted October 2025 to October 2026; latest October 2026), plus all 5 reviews rated 1★ (posted December 2024 to December 2025) and all 5 rated 2★ (posted October 2024 to February 2026), 70 in total. These are trends within what we read and may not reflect the product’s current condition.
What Reviewers Praise
Rich fat and melt-in-the-mouth texture
About 15 of the 60 reviews in the default order mentioned that the fat was rich and the texture and sweetness melted in the mouth.
Thawing instruction sheet
About 19 reviews said the enclosed instruction sheet was easy to follow and that thawing as directed went smoothly.
Satisfaction with the amount
About 14 reviews mentioned the 500g amount or how satisfying it was for the quantity.
Not feeling it is wakeari / repeat orders
About 6 reviews said they did not feel it was wakeari, and about 18 mentioned that they order it repeatedly.
Source: Rakuten customer reviews (accessed October 11, 2026. Counts are approximate, from a keyword search)
What Reviewers Note
Sinew (suji) is present
About 16 of the 60 reviews in the default order mentioned sinew (including posts saying it did not bother them). Four of the five 1-star reviews and three of the five 2-star reviews also cited sinew, with comments that it is hard to eat as sashimi or that removing the sinew took effort.
How to check: the wakeari details are summarized in the “What Makes It Wakeari” row of “Basic Information” in this article.
Felt closer to akami (lean tuna) than chutoro
Across the default order and the 2-star reviews, 2 posts said it felt closer to akami (lean tuna) than to chutoro.
Color and softness change depending on how it is thawed
2 posts said the color got worse or the softness changed depending on the thawing time or method.
How to check: that an instruction sheet for thawing is included is noted in the “Thawing Method” row of “Basic Information” in this article.
Source: Rakuten customer reviews (accessed October 11, 2026)
Who It Suits / Who Should Be Careful
Who It Suits
- Those who can accept wakeari items for home use, where shape and the amount of sinew vary from piece to piece
- Those who have freezer space for 500g and can thaw it following the enclosed instruction sheet
- Those who can finish it the same day once thawed, as the page advises
Who Should Be Careful
- Those with allergies (the labeling is not confirmed, so check the label on the product when it arrives)
- Those looking for a saku with little sinew and an even shape
- Those who want to use it as a gift (the product description says it is not suited to gifts)
- Those who find it hard to arrange the receiving date and time (the shop is closed on Saturdays, Sundays, public holidays, and so on)
Prices, stock, shipping fees, and delivery dates are subject to change. The information in this article was gathered on October 11, 2026. Please be sure to check the listing at the link before purchasing.
This article contains affiliate links (advertising). Editorial Policy
Summary
- The amount is about 500g, and the shop’s label says 5 to 6 servings (a guide only). Store frozen (−18°C or below); best-before is 7 days from the shipping date, and eat the same day once thawed
- The page says the wakeari condition includes irregular shapes, cracks, chips, sinew and blood clots. The main point reviewers raised was sinew
- Ingredient and allergen labeling could not be confirmed on the product page; be sure to check the label on the product when it arrives. The page says it is not suited to gifts
Related Pages
This article summarizes information publicly available on retail sites and review sites. Product details such as amount, storage method, and ingredients are subject to change. Please check the seller’s listing for the most current information.
Assessments of taste and quality are summarized from third-party posts with sources cited, and do not represent Ochinity’s own evaluation. Our editorial process is described in the Editorial Policy.
Information as of: October 11, 2026 / Sources: Rakuten Ichiba “まぐろのカネトモ” product page, Rakuten customer reviews, Consumer Affairs Agency “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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