The umibudo (sea grapes) in this article are described in the product page’s FAQ as being from Vietnam, not produced in Japan. They arrive salt-cured and are eaten after soaking in water to rehydrate them. This article organizes the published product information and Rakuten Ichiba reviews for うまいもんグルメ卸売直販えつすい’s umibudo, 1 pack of 2 servings (20g × 2 bags), into five points: amount, storage method, ingredient labeling, suitability as a gift, and reviews.
What We Confirmed
- Amount and roughly 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 | Etsusui Umibudo (Sea Grapes), 1 Pack, 2 Servings (20g × 2 Bags) |
|---|---|
| Name | Umibudo (sea grapes)Source: product information section of the Rakuten Ichiba product page (viewed September 27, 2026) |
| Amount | 40g (20g × 2 bags). The shop’s FAQ gives one bag as roughly one servingSource: product information section of the product page / FAQ in the product page images |
| Storage Method | Store at room temperature. The product page images say that, while unopened, it can be stored at room temperature, and that it can also be stored in the refrigeratorSource: product information section of the product page / FAQ in the product page images |
| Best-Before Date | 1 year at room temperatureSource: product information section of the product page |
| Country of Origin | The product information section has no country-of-origin field, so this is Not confirmed. The shop’s FAQ says the umibudo are from Vietnam and are not produced in JapanSource: product information section of the product page / FAQ in the product page images |
| Place of Processing | Final place of processing: VietnamSource: product information section of the product page |
| State / How to Eat (Whether Cooking Is Required) | It arrives salt-cured, and the product page says it can be eaten as is after soaking in water. We found no guidance about cooking. The instructions are to put it in a large bowl filled with water, with about 3 minutes as the guideline soaking time; soaking too long weakens the texture, and it shrinks if left for a long time after soaking, so it should be eaten soon. Removing the salt is basically unnecessary, and if the saltiness bothers you, the page says to change the water and rinse lightly. No sauce is includedSource: soaking instructions and FAQ in the product page images |
| Shipping | Room-temperature delivery. In the shipping method selection field, you choose between “メール便（ポスト投函）” (mail delivery, left in your mailbox) and “宅配便” (home delivery service). If you want to avoid mailbox delivery, the shop advises choosing home deliverySource: shipping method selection field on the product page / FAQ in the product page images |
| Manufacturer | Not confirmed (The product page lists the seller as 株式会社えつすい (Etsusui Co., Ltd.), 福井県敦賀市砂流43-6-3 (Tsuruga, Fukui Prefecture; delivery center))Source: product information section of the product page |
| Shop | うまいもんグルメ卸売直販えつすい (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
Ingredients: umibudo (sea grapes; クビレヅタ), saltSource: product information section of the product page (viewed September 27, 2026)
We could not find an allergen labeling field (specified raw materials, etc.) on this product’s page, so it is Not confirmed. If you have a food allergy, please contact the shop before purchasing, or check the label on the product once it arrives.
Reference: Consumer Affairs Agency, Japan, “About Allergen Labeling” (accessed September 27, 2026)
Five Things to Check Before Buying
| What to Check | For This Product | Basis |
|---|---|---|
| 1. Amount and servings | 40g (20g × 2 bags). One bag is given as roughly one serving, so the 2 bags make 2 servings. It arrives as small salt-cured bags and is eaten after soaking in water | Product information section and FAQ in the images on the product page |
| 2. Storage method and shelf life | Stored at room temperature, with a best-before date of 1 year at room temperature. The page advises eating it soon after soaking in water | Product information section and eating instructions in the images on the product page |
| 3. Ingredients and allergen labeling | Ingredients are umibudo (クビレヅタ) and salt. Allergen labeling field: Not confirmed. From Vietnam, according to the shop | Product information section and FAQ in the images on the product page |
| 4. Suitable as a gift | The type of inscription on noshi (gift wrapping label), wrapping, and message cards: Not confirmed. Mail delivery is left in the mailbox | Product page (gift field and shipping method selection field) |
| 5. Review trends | We read all 56 Rakuten Ichiba reviews in the “Standard” sort order. They were posted between April 2019 and September 2024, with the most recent posted on September 3, 2024, and there have been no new posts for more than two years. This trend may not reflect the product’s current state. Some reviewers praise how it expands when soaked in water and its popping texture, while others mention the small size of the bags that arrived, the small amount, and the difference in texture from fresh umibudo | Rakuten customer reviews (viewed September 27, 2026) |
Suitable as a Gift?
The order data on the Rakuten Ichiba product page shows a setting for noshi support (checked September 27, 2026). However, we found no guidance on the page about noshi, wrapping, or message cards, so the type of noshi inscription and whether wrapping is available are Not confirmed. If you are considering it as a gift, checking the following points with the shop before purchasing can help avoid misunderstandings.
- Whether noshi can be added and whether you can choose the type of inscription (no guidance on the product page)
- Whether to ship by mail delivery (left in the mailbox) or home delivery. The shop advises choosing home delivery if you want to avoid mailbox delivery
- The contents are small bags of 20g × 2, so the amount may look small when it arrives (this product is eaten after soaking in water)
What Public Reviews Say
Below is a summary of the rating and posts published on Rakuten Ichiba. The rating figures are as of the time we viewed them and may change afterward. Amazon and Yahoo! Shopping reviews and star ratings are not covered in this article due to each company’s terms.
| Site | Rating | Reviews | Viewed |
|---|---|---|---|
| Rakuten customer reviews (product page) | 3.86 / 5 | 56 | September 27, 2026 |
We read all 56 reviews. This trend may not reflect the product’s current state. The star breakdown is 23 five-star, 15 four-star, 8 three-star, 7 two-star, and 3 one-star reviews. The most recent post was in September 2024, and we found no posts after that.
What Reviewers Praise
Many posts say it expanded a lot when left in water as described and that they enjoyed its popping texture. Some posts mention that, unopened, it has a long best-before date and can be kept on hand, that it comes in 2 bags so you can use one at a time, and that it arrived quickly. There are also posts saying they buy it repeatedly.
Source: Rakuten customer reviews (viewed September 27, 2026)
What Reviewers Note
Several posts point out that the bags that arrived were smaller than expected and the amount was small, and there is also a post saying it did not expand as much as five times its size. Some say the texture and taste differ from fresh umibudo, and that the texture became weaker after adding dressing or leaving it for a while. A small number of posts mention buying without checking the origin and only later noticing it was from Vietnam, or mention an odor or water leaking from the bag.
Source: Rakuten customer reviews (viewed September 27, 2026)
Who It Suits / Who Should Be Careful
Who It Suits
- Looking for umibudo that can be kept at room temperature
- Want to soak one bag at a time in water whenever you want to eat it
- Want to try a small amount first, 2 servings
Who Should Be Careful
- Looking for umibudo grown in Okinawa or elsewhere in Japan (according to the shop, this product is from Vietnam)
- Expecting the same texture as fresh umibudo
- Want to eat it as is right after it arrives (it takes the extra step of soaking in water)
- Want to specify the noshi inscription or wrapping for a gift (not confirmed)
Prices, stock, shipping fees, and delivery dates are subject to change. This article’s information-as-of date is September 27, 2026. Please be sure to check the listing at the link before purchasing.
This article contains affiliate links (advertising). Editorial Policy
Summary
- Salt-cured umibudo, 40g (20g × 2 bags), eaten after soaking in water. One bag is given as roughly one serving
- Stored at room temperature, with a best-before date of 1 year at room temperature. The page advises eating it soon after soaking
- From Vietnam, according to the shop. Reviews are divided between praise for the texture and comments on the small amount, and the most recent post was in September 2024
Related Pages
This article organizes information published on retail sites. Product details such as amount, 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: September 27, 2026 / Sources: Rakuten Ichiba “うまいもんグルメ卸売直販えつすい” product page, Rakuten customer reviews, Consumer Affairs Agency, Japan, “About Allergen Labeling”
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