This is a frozen uni ikura don set (a set for sea urchin and salmon roe rice bowls) sold by まぐろ処 一条 on Rakuten Ichiba. It arrives as 4 packs in total (340g): 2 packs of sea urchin (uni) at 100g each and 2 packs of ikura (salmon roe marinated in soy sauce) at 70g each, and the shop describes it as 4 servings. This article organizes what is stated on the Rakuten product page, the shop’s guide images and the Rakuten customer reviews (“Minna no Review”) into five points: contents, storage and thawing, ingredient labeling, gift options and reviews. Two features were confirmed on the product page: the packs are portioned one serving at a time, and the shop says it can be eaten after natural thawing in the refrigerator.
At a Glance
Key points of this product
- Packs portioned one serving at a time (sea urchin 100g × 2, soy-sauce-marinated ikura 70g × 2). The shop says you can also eat just the uni or just the ikura
- The uni is labeled as made without alum (myoban). The shop describes the uni as made by a blanching method (buranchi) in which only the surface is briefly heated with steam. No additive-free label was found for the ikura, and its ingredients include a processed soy sauce product and soy sauce
- Natural thawing in the refrigerator for 3–5 hours. The shop says it can be eaten as is after natural thawing, and advises against thawing with heat because quality drops sharply
- Rakuten rating 4.36 / 5 (442 reviews). Viewed October 17, 2026. There are 41 reviews at 1 or 2 stars combined, so opinions are split (weak point: some reviewers say it was not enough for 4 bowls. This reflects trends in what we read and does not necessarily represent the product’s current state)
Suits: People who want to use uni and ikura portioned one serving at a time in a rice bowl, thawed naturally in the refrigerator as the shop describes
The features are from the Rakuten Ichiba product page and the shop’s guide images (viewed October 17, 2026). The rating is as displayed on Rakuten (viewed October 17, 2026); it reflects trends in what we read and does not necessarily represent the product’s current state.
Compared with 3 Similar Items
Among the 3 kaisendon (seafood rice bowl) items featured on Ochinity (as of October 17, 2026). Each value is as of the date its own article was researched and may differ from the current listing. Ratings are as displayed on Rakuten, and the fewer the reviews, the more easily the figure moves.
| Product | Total amount | Contents | Rakuten rating |
|---|---|---|---|
| Uni Ikura Don, 4 BowlsThis article · frozen | 340g | Sea urchin, soy-sauce-marinated ikura | 4.36442 reviews |
| 請関水産 Selectable Kaisendon Set, 10 Servingsfrozen | 768g | Yellowtail, red sea bream, amberjack (or bonito), tuna, salmon | 4.61583 reviews |
| Tsuke-don 3 Kinds, 6 Servings, 80g × 6 Bagsfrozen | 480g | Omakase, assorted by the shop (examples: yellowfin tuna, katsuo or horse mackerel, buri-type fish) | 4.621309 reviews |
Click a product name to go to that product’s article.
- The total amount is 340g. The other 2 items in the table are 768g and 480g
- The Rakuten rating is 4.36 (442 reviews). The other 2 items in the table are 4.61 (583 reviews) and 4.62 (1309 reviews)
Basic Information
- Contents
- Sea urchin 100g × 2 packs, soy-sauce-marinated ikura 70g × 2 packs (340g in total). The shop describes it as 4 servings
- Origin of ingredients
- Sea urchin from Chile, ikura from the United States (per the ingredient label)
- Storage
- Arrives frozen. Store in the freezer; about 1 month is the guideline, and the shop says to eat it the same day once thawed
- Thawing
- Natural thawing in the refrigerator. The shop gives 3–5 hours as a guide
- Allergen labeling
- Wheat and soy are contained in the ikura’s processed soy sauce product and soy sauce (labeling for the sea urchin and the ikura themselves: Not confirmed)
- Delivery
- Yamato Transport Cool TA-Q-BIN (frozen). The delivery date can be specified from 5 days to 60 days after the order
- Noshi and gifts
- Noshi (gift wrapping label) and message cards are supported. A delivery slip showing the price is not included
- Manufacturer
- Not confirmed (the seller is まぐろ処一条)
This list transcribes what is stated on the Rakuten Ichiba product page. However, the “not confirmed” labels and any notes we add are our own.
No separate allergen labeling field was found on the product page, and the content above follows the ingredient label. If you have an allergy, please ask the seller before buying, or be sure to check the label on the product you receive (Reference: Consumer Affairs Agency, Japan, “About Allergen Labeling”, accessed October 17, 2026).
See the transcribed details, sources and “not confirmed” items (17 items)
This list transcribes what is stated on the Rakuten Ichiba product page. However, the “not confirmed” labels and any notes we add are our own.
- Product name
- 無添加うにイクラ丼4杯分（まぐろ処 一条） (Uni ikura don for 4 bowls, まぐろ処 一条)The product name shown on the Rakuten product page is a long string with many search terms. Only the product-name part is shown here. Which ingredient the “無添加” (additive-free) label applies to is summarized in the “Ingredients” row below.
- Contents
- Sea urchin 100g × 2 packs and soy-sauce-marinated ikura 70g × 2 packs, 4 packs in total (340g). The shop describes it as about 4 donburi bowls, or about 6 bowls if served in rice bowls (chawan), and the product description says 4 servings. Each pack is a single-serving portion, and the shop says you can also eat just the uni or just the ikuraSource: Rakuten Ichiba product page and product description, the shop’s guide images (viewed October 17, 2026)
- Options you can choose
- There is no option selector for specifications; there is only one kind of contentsSource: Rakuten Ichiba product page (viewed October 17, 2026)
- Storage method
- Arrives frozen and is stored in the freezer. The storage temperature value is Not confirmedSource: Rakuten Ichiba product page and product description, the shop’s guide images
- Best-before date
- The product is said to carry a printed date. One month in the freezer is recommended, and the shop’s guide image also says within 1 month when kept frozen. The specific date is Not confirmedSource: Rakuten Ichiba product page and product description, the shop’s guide images
- Thawing method
- Natural thawing inside the refrigerator. The guideline is 3–5 hours, and the shop notes it varies with the season and temperature. The shop advises against thawing with heat because quality drops sharplySource: the shop’s guide image (viewed October 17, 2026)
- Notes after opening
- The shop says to eat it the same day after thawing. No description of how to store it after thawing was found: Not confirmedSource: Rakuten Ichiba product page and product description
- Ingredients
- Sea urchin: natural sea urchin from Chile (labeled “無添加”). Ikura: ikura (salmon roe (from the United States)), processed soy sauce product (contains wheat and soy), soy sauce (contains wheat and soy). The shop notes that some ingredients may change depending on arrivals. The “無添加” (additive-free) label relates to the sea urchin only: the product description says alum (myoban) is not used, and the shop’s guide image says “ミョウバン不使用”. No additive-free label was found for the ikura. The shop’s guide image says that bitterness or astringency may occasionally be noticed depending on the individual piece, and describes this as characteristic of Chilean sea urchinSource: Rakuten Ichiba product page and product description, the shop’s guide images (viewed October 17, 2026)
- Country of origin of ingredients
- The sea urchin is from Chile, and the salmon roe used for the ikura is from the United StatesSource: ingredient label in the Rakuten Ichiba product page and product description (viewed October 17, 2026)
- Allergen labeling
- No separate allergen labeling field was found. The ingredient label states that the ikura’s processed soy sauce product and soy sauce contain wheat and soy. The labeling of specified allergens for the sea urchin and the ikura themselves is Not confirmedSource: Rakuten Ichiba product page and product description
- Place of processing
- Not confirmed (no manufacturer is shown. The seller’s address is Iwaki City, Fukushima Prefecture)Source: Rakuten Ichiba product page and product description
- Condition / How to eat (whether heating is needed)
- Arrives frozen. The shop states that after natural thawing it can be eaten as is (“自然解凍後はそのままお召し上がりいただけます”). Whether it is labeled “生食用” (for eating without cooking) or “加熱用” (for cooking) is not stated on the product page or in the guide images. The shop’s guide image explains that the uni is made by a blanching method in which only the surface is briefly heated with steamSource: the shop’s guide image (viewed October 17, 2026)
- Delivery
- Yamato Transport Cool TA-Q-BIN (frozen). The packaging is described as a polystyrene foam box or a cardboard box (both with cold packs)Source: Rakuten Ichiba product page and product description, the shop’s guide images
- Delivery date and shipping timing
- According to the product page, the delivery date can be specified from 5 days to 60 days after the order, and a time slot can also be specified. The order deadline and closure days around the year-end and New Year holidays are Not confirmedSource: the shop’s guide image (viewed October 17, 2026)
- Noshi and gifts
- Noshi and message cards are both indicated as supported. The noshi (strip type) options are plain noshi, celebration (御祝), return gift (uchi-iwai), mid-year gift (ochugen) and year-end gift (oseibo); the gift stickers are thanks (感謝), celebration (祝), New Year’s greeting gift (お年賀), Respect for the Aged Day (敬老の日), Mother’s Day (母の日) and Father’s Day (父の日). They are specified on the order confirmation screen and affixed to the outer box. A message is entered in the remarks field on the confirmation screen, with a character limit. No wrapping field and no gift-box indication was found. Because documents showing the amount are not sent with the product, the shop says the amount is not conveyed to the recipientSource: Rakuten Ichiba product page, the shop’s guide images (viewed October 17, 2026)
- Manufacturer
- Not confirmed (no manufacturer is shown. The seller is まぐろ処一条)Source: Rakuten Ichiba product page and product description
- Shop
- まぐろ処 一条 (Rakuten Ichiba)
Prices are not listed here because they change. Please check the current price and stock availability at the link above.
What Public Reviews Say
We organized the product reviews on Rakuten Ichiba by point of view. Rating figures are as of the time we viewed them and change afterward. What follows reflects trends in what we read and does not necessarily represent the product’s current state.
| Site | Rating | Number of reviews | Viewed on |
|---|---|---|---|
| Rakuten customer reviews (“Minna no Review”, product page) | 4.36 / 5 | 442 reviews | October 17, 2026 |
Rating breakdown: 5★ 292 / 4★ 85 / 3★ 24 / 2★ 13 / 1★ 28 (as shown on Rakuten Ichiba, viewed October 17, 2026)
What we read: the first 60 reviews in Rakuten’s default order (posted June 2012 to September 2026, the latest in September 2026), all 28 one-star reviews (posted January 2013 to August 2026) and all 13 two-star reviews (posted June 2014 to January 2026), 101 in total. We did not read the three-star reviews. This reflects trends in what we read and does not necessarily represent the product’s current state.
Because we read all of the one- and two-star reviews, the counts for points of concern come out higher than if we had counted only the 60 reviews in the default order. The counts are approximate figures from reading the text, and do not include posts that are only about delivery or shop service, or posts from people who had not yet eaten the product.
What Reviewers Praise
Sweetness, creaminess and lack of odor in the uni (about 13 of 60)
About 13 of the 60 reviews in the default order said the uni was sweet, creamy and not fishy-smelling. Some also wrote that they had not expected much from a frozen product but found it better than they had imagined.
Size and popping texture of the ikura grains (about 5)
About 5 of the 60 reviews in the default order said the ikura grains were large or had a popping texture.
Eaten by the family and the amount was enough (about 5)
About 5 of the 60 reviews in the default order said that several people, such as a family, ate it and the amount was enough.
Appreciated as a gift (about 9)
About 9 of the 60 reviews in the default order said it was given as a gift, such as for Father’s Day, Mother’s Day or year-end gifts (oseibo), and the recipients were pleased.
Source: Rakuten customer reviews (viewed October 17, 2026)
What Reviewers Note
Bitterness, odor and fishy smell in the uni (about 15 of the 101 read)
About 15 of the 101 reviews we read said they noticed bitterness or an off smell in the uni. By rating: 10 at one star, 4 at two stars and 1 at five stars; the five-star review said there was bitterness depending on the occasion of purchase. The shop’s guide image says that bitterness or astringency may occasionally be noticed depending on the individual piece.
How to check: The shop’s statement is summarized in the “Ingredients” row of the detailed list under “Basic Information” in this article.
Small ikura grains, small amount, not enough for 4 bowls (about 20 of the 101 read)
About 20 of the 101 reviews we read said the ikura grains were small, differed from the photo, or the amount was small, or that it was not enough for 4 bowls and made only about 2. By rating: 9 at one star, 6 at two stars, 4 at four stars and 1 at five stars.
How to check: The contents are in the “Contents” row under “Basic Information” in this article (sea urchin 100g × 2, ikura 70g × 2, 340g in total).
Uni taste differing from what the label led readers to expect (about 4 of the 101 read)
About 4 of the 101 reviews we read (3 at one star, 1 at two stars) said the taste of the uni differed from what they had expected from the “無添加” (additive-free) label. On the product page, the additive-free label is written to mean that alum (myoban) is not used in the uni. The taste impressions are the reviewers’ own statements.
How to check: What the additive-free label applies to is summarized in the “Ingredients” row of the detailed list under “Basic Information” in this article.
Source: Rakuten customer reviews (viewed October 17, 2026), the shop’s guide image (viewed October 17, 2026)
Summary: Is This the One for You?
Why choose it: You want to receive uni and ikura portioned one serving at a time, and you want to make a rice bowl quickly with the natural thawing in the refrigerator that the shop describes. If those two are your conditions, this product from まぐろ処 一条 is a candidate (weak point: some reviews say it was not enough for 4 bowls).
- It is 340g in total (sea urchin 100g × 2, soy-sauce-marinated ikura 70g × 2), portioned one serving at a time. The shop gives natural thawing in the refrigerator for 3–5 hours as a guide
- Noshi (strip type) and message cards are supported, and the shop says a delivery slip showing the price is not included
- The Rakuten rating is 4.36 / 5 (442 reviews), with 41 reviews at 1 or 2 stars combined. Some reviews mention bitterness in the uni and the amount of ikura, in about 15 and about 20 of the 101 we read
Other options: If you want to compare 5 kinds of fish as a sashimi assortment, 請関水産 Selectable Kaisendon Set, 10 Servings (768g); if you want 6 servings of marinated bowl toppings, 魚かつ Tsuke-don 3 Kinds, 6 Servings, 80g × 6 Bags (480g).
The basis for this section is the Rakuten Ichiba product page, the shop’s guide images and the Rakuten customer reviews (viewed October 17, 2026). It reflects trends in the reviews we read and does not necessarily represent the product’s current state.
Prices, stock, shipping fees, and delivery dates are subject to change. This article’s information-as-of date is October 17, 2026. Please be sure to check the listing at the link before purchasing.
This article contains affiliate links (advertising). Editorial Policy
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.
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 17, 2026 / Sources: Rakuten Ichiba “まぐろ処 一条” product page, Rakuten customer reviews, Consumer Affairs Agency “About Allergen Labeling”
