When choosing king crab sold pre-cut, it can be hard to tell how much you’re getting relative to the number of servings, how long it keeps, and whether it’s suitable as a gift, which makes it easy to get stuck on when choosing. This article organizes the publicly available product information and reviews for Umi no Sachi Nanoni YAMATO’s cut, extra-large king crab, 1kg, into five points: amount, storage method, ingredient labeling, suitability as a gift, and review trends.
What We Confirmed
- Amount and approximate number of servings
- Storage method and shelf life
- Ingredients and allergen labeling
- Suitable as a gift?
- Trends in publicly available reviews
Basic Information
| Product Name | Umi no Sachi Nanoni YAMATO Cut Extra-Large King Crab 1kg“Extra-large” is a name the seller gave to this product listing, and does not indicate rank or quality. |
|---|---|
| Name | Frozen boiled king crab (pre-cut)Source: Rakuten product page (viewed September 12, 2026) |
| Amount | 1,000g (in a gift box). Included: 90g of crab hot pot soy-based soupSource: same as above |
| Approximate Servings | Not confirmed (not stated on the product page) |
| Condition | Frozen, already boiled. Boiled means precooked, which is different from rawSource: product description on the product page |
| Best-Before Date | Frozen (unthawed): 1 month (once thawed, refrigerate and eat the same day). The shop advises “1 month from the shipping date” as a guideline, taking home refrigerator/freezer conditions into accountSource: same as above |
| Country of Origin | Russia (king crab)Source: same as above |
| Weight After Thawing | The shop advises that, because crab naturally contains a lot of water, the weight may drop by around 10% from the labeled NET weight after thawingSource: same as above |
| Delivery | Frozen delivery (Kuroneko Yamato or Sagawa Express; you cannot choose the carrier)Source: same as above |
| Shop | Umi no Sachi Nanoni YAMATO (Rakuten Ichiba; seller: YAMATO Co., Ltd.) |
Prices are not listed because they change. Please check the link above for the latest price and stock.
Ingredients and Allergen Labeling
The product page lists the ingredients of the main item (king crab) as “king crab (Russia),” and the included crab hot pot soy-based soup as “soy sauce (made in Japan), salt, amino acid solution, sugar, mirin, bonito extract, kelp extract, yeast extract / seasoning (amino acids, etc.), (contains wheat and soybean).” However, for the main item (king crab), within what we could check, we did not find a dedicated allergen labeling section for specified allergens; this item is not confirmed.
Crab is one of the ingredients that must be declared under Japan’s Food Labeling Act. If you have a shellfish (crustacean) allergy, you cannot eat the main item (king crab). The included soup contains wheat and soybean. If you want to check the additives used in processing, please contact the shop before purchasing or check the label on the product when it arrives.
Reference: Consumer Affairs Agency, “About Allergen Labeling” (viewed September 12, 2026)
Five Things to Check Before Buying
| What to Check | For This Product | Basis |
|---|---|---|
| 1. Amount / servings | 1,000g (in a gift box). Comes with a 90g crab hot pot soy-based soup. The number of servings is not confirmed | Product description on the product page |
| 2. Storage method and shelf life | 1 month frozen (unthawed) as a guideline. Once thawed, refrigerate and eat the same day. The shop advises the weight may drop by around 10% after thawing | Product description on the product page |
| 3. Ingredients and allergen labeling | The main item is listed as “king crab (Russia).” An allergen labeling section is not confirmed. The included soup contains wheat and soybean | Rakuten product page |
| 4. Suitable as a gift? | Noshi is shown as available. Comes in a gift box. Whether name printing on the noshi or message cards are supported is not confirmed. A “social gift” option is offered | Gift section of the product page |
| 5. What reviews say | The Rakuten rating is 4.29 out of 5 (146 reviews). We found no display of individual review text on the product page, so only the count and average are confirmed | Rakuten customer reviews (“Minna no Review”) (viewed September 12, 2026) |
Suitable as a Gift?
The “Gift” section of the product page shows that noshi (gift wrapping label) is available, and both the product name and description state that it arrives in a gift box. Whether name printing on the noshi is possible, and whether message cards are supported, are not confirmed, as the product page does not state this. There is also a “social gift sending” (social gift) option, which lets you send a gift by SNS or email without knowing the recipient’s address. If you are considering this as a gift, checking the following points before purchase should help.
- Type of noshi inscription and whether name printing is possible (not stated on the product page)
- Whether message cards are supported (not stated on the product page)
- Since this arrives by frozen delivery, whether the recipient can specify a delivery date and time
What Public Reviews Say
Below is a summary of the rating published on Rakuten Ichiba. The rating figures are as of the time we viewed them and will change afterward.
| Site | Rating | Count | Date Viewed |
|---|---|---|---|
| Rakuten customer reviews (product page) | 4.29 / 5 | 146 | September 12, 2026 |
We found no display of individual review text for the main item (king crab) on the product page, so the specific trends in praise or concerns are not confirmed. Only the count and average could be confirmed.
The product page also carries an advance notice from the seller stating that “the shoulder meat and the rakkyo and nanban sections (crab body parts, as named by the seller) may taste somewhat salty.” This is not a customer review; it is a caution the seller states in advanceSource: product description on the product page (viewed September 12, 2026).
Who It Suits / Who Should Be Careful
Who It Suits
- Want the convenience of it arriving already cut (pre-cut, in a gift box)
- Want to eat it soon after thawing, since it’s already boiled
- Want to use the included crab hot pot soy-based soup as well
- Want to send a gift easily using the social gift option
Who Should Be Careful
- Have a shellfish (crustacean) allergy (cannot eat the main item)
- Want to check the details of the main item’s allergen labeling before buying (not confirmed)
- Want to know the approximate number of servings before buying (not confirmed)
- Want to confirm whether noshi name printing and message cards are supported before giving it as a gift (not confirmed)
- Concerned about the seller’s advance notice that the shoulder meat and other sections may taste somewhat salty
Prices, stock, shipping fees, and delivery dates are subject to change. The information in this article was gathered on September 12, 2026. Please be sure to check the listing at the link before purchasing.
This article’s links include affiliate advertising. Editorial Policy
Summary
- 1,000g, pre-cut, in a gift box. The approximate number of servings is not confirmed
- Store frozen (unthawed) for about 1 month as a guideline. Once thawed, eat the same day as a guideline
- The main item’s ingredients are listed as “king crab (Russia).” No allergen labeling section was found; note that this product cannot be eaten by those with a shellfish (crustacean) allergy
Related Pages
This article summarizes information published on the relevant sales and review sites. Product details such as amount, storage method, and ingredients are subject to change. Please check the seller’s listing for the latest information.
Evaluations of taste and quality are quoted from third-party posts with the source noted, and are not Ochinity’s own evaluations. How this article was put together is described in our Editorial Policy.
Information as of: September 12, 2026 / Sources: Rakuten Ichiba product page for “Umi no Sachi Nanoni YAMATO,” Rakuten customer reviews (“Minna no Review”), Consumer Affairs Agency “About Allergen Labeling”
