When you buy dried shiitake mushrooms for home use, the questions are how much splitting and discoloration there is, how to store them, and what the delivery conditions are. This article looks at “大分産 原木 訳あり しいたけ 160g” (Oita log-grown wakeari dried shiitake, 160g), made with log-grown dried shiitake from Oita Prefecture and sold by アットマーク大分しいたけ on Rakuten Ichiba. Based on what the Rakuten Ichiba product page states and the Rakuten customer reviews, we organized it into five points: quantity, storage and shelf life, ingredient labeling, suitability as a gift, and reviews. It comes in one size, 160g, and is described as commercial-use dried shiitake that includes discolored, split, and chipped caps (wakeari, “imperfect/irregular, sold at a discount”).
What We Confirmed
- Quantity and a guide to how many people it serves
- 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 | 大分産 原木 訳あり しいたけ 160g 乾しいたけ (Oita log-grown wakeari shiitake, 160g, dried shiitake)Source: the parts of the Rakuten Ichiba product name that give the origin, cultivation method, quantity, and product type, transcribed as written (viewed October 13, 2026) |
|---|---|
| Name | The product page has no “Name” field, so this is not confirmed. The ingredient field reads “大分県産原木干し椎茸業務用（変色、割れ葉、ワケあり、欠け葉）160g” (log-grown dried shiitake from Oita Prefecture, commercial use (discolored, split caps, wakeari, chipped caps), 160g)Source: product description on the Rakuten Ichiba product page |
| Amount | 160g (1 bag). There are no size options; this is the only one. A guide to how many people it serves is not confirmedSource: product description on the Rakuten Ichiba product page |
| What Makes It Wakeari | The ingredient field states that it includes discolored, split, and chipped caps. The product description explains that these are shiitake that split, chipped, or changed color during production and cannot be used for gifts. Because it is for commercial use, the page says many poorly colored shiitake are included and advises those who would mind this not to buy itSource: product description on the Rakuten Ichiba product page |
| Storage Method | The page advises avoiding humidity. It recommends putting them in an airtight container and storing them in a dark, cold place such as a refrigeratorSource: product description on the Rakuten Ichiba product page |
| Best-Before Date | 1 year from the date of manufacture (bagging date)Source: product description on the Rakuten Ichiba product page |
| Country of Origin (Raw Materials) | Oita Prefecture (as written in the ingredient field). The product description says they were grown on kunugi (sawtooth oak) logs in Oita PrefectureSource: product description on the Rakuten Ichiba product page |
| Place of Processing | Not confirmed |
| State / How to Eat (Whether Cooking Is Required) | These are dried shiitake that you rehydrate in water before use. The page says the best way is to rehydrate them in cold water at about 5°C for 3 to 5 hours, and that thick shiitake such as donko need longer than that. We could not find any statement on whether cooking is requiredSource: product description on the Rakuten Ichiba product page |
| Delivery | The page says it is sent by post (handled as mail delivery, メール便) and delivered to your mailbox. It says delivery is only to the orderer’s address and cannot be sent to an address different from the orderer’s. The page shows that delivery date and time cannot be specified and that there is no tracking number. Cash on delivery is not available; payment is by credit card or bank transfer (prepaid) only. If you order more than one, the page says each is shipped separately and arrival dates may differ. We could not find any statement about chilled or frozen deliverySource: product description on the Rakuten Ichiba product page (notes) |
| Manufacturer | Not confirmed (we could not find any manufacturer or processor listed on the product page) |
| Shop | アットマーク大分しいたけ (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
The product description lists only log-grown dried shiitake from Oita Prefecture in the ingredient field (source: Rakuten Ichiba product page, viewed October 13, 2026). We could not find any allergen labeling, so this item is not confirmed. If you have an allergy, ask the shop before buying or be sure to check the label on the product when it arrives.
Reference: Consumer Affairs Agency, Japan, “About Allergen Labeling” (accessed October 13, 2026)
Five Things to Check Before Buying
| What to check | For this product | Basis |
|---|---|---|
| 1. Amount and servings | One size: 160g (1 bag). The number of servings is not confirmed. Described as commercial-use shiitake that includes discolored, split, and chipped caps | Product description on the Rakuten Ichiba product page. No servings guide is given |
| 2. Storage method and shelf life | Best before 1 year from the date of manufacture (bagging date). The page advises avoiding humidity and recommends storing them in an airtight container in a dark, cold place such as a refrigerator | Product description on the Rakuten Ichiba product page |
| 3. Ingredients and allergen labeling | The ingredient is log-grown dried shiitake from Oita Prefecture. Allergen labeling is not confirmed. The manufacturer is also not confirmed | Product description on the Rakuten Ichiba product page |
| 4. Whether it works as a gift | The page says wrapping, noshi (gift wrapping label), and carrier bags are not available. Delivery is only to the orderer’s address | Product description on the Rakuten Ichiba product page (notes) |
| 5. Review trends | Rated 4.78 / 5 (1,728 reviews) on Rakuten Ichiba. We read the first 60 in Rakuten’s default order, plus all 9 rated 1★ and all 7 rated 2★, 76 in total (posted December 2009 to September 2026; latest September 2026). What follows are trends within what we read and may not reflect the product’s current condition. Many reviewers say the splits and irregular shapes are no problem for home cooking and that many caps turn out thick once rehydrated, while others point out that some came finely broken with a lot of powder and stems, or that many were thin | Rakuten customer reviews (viewed October 13, 2026) |
Suitable as a Gift?
Several conditions make this product hard to use as a gift. The product description says that, to keep costs down, wrapping, noshi, and carrier bags are not available. Delivery is only to the orderer’s address, so it cannot be sent directly to another address. The page also explains that split, chipped, or discolored shiitake cannot be used for gifts (source: product description on the Rakuten Ichiba product page, viewed October 13, 2026).
- Noshi, wrapping, and message cards: the page says wrapping, noshi, and carrier bags are not available. We could not find any mention of message cards
- Delivery address: the page says delivery is only to the orderer’s address
- How it arrives: delivered to your mailbox, and the page says delivery date and time cannot be specified
Among the 76 reviews we read, most were written as for home use, and 1 post said it is not suitable for giving to others (source: Rakuten customer reviews, viewed October 13, 2026).
What Public Reviews Say
We organized the Rakuten Ichiba product reviews by viewpoint. The rating figures are as of the time we viewed them and may change afterward.
| Site | Rating | Reviews | Viewed |
|---|---|---|---|
| Rakuten customer reviews (product page) | 4.78 / 5 | 1,728 | October 13, 2026 |
Rating breakdown: 5★ 1,424 / 4★ 255 / 3★ 33 / 2★ 7 / 1★ 9 (as shown on Rakuten Ichiba, viewed October 13, 2026)
What we read: the first 60 reviews in Rakuten’s default order (posted December 2009 to September 2026; latest September 2026; 25 of them within the last two years, i.e. October 2024 or later), plus 9 filtered to 1★ (posted December 2011 to March 2025) and 7 filtered to 2★ (posted January 2011 to September 2025), 76 in total. We read every 1★ and 2★ review. These are trends within what we read and may not reflect the product’s current condition.
What Reviewers Praise
Thick and large once rehydrated
21 of the 60 reviews in the default order (7 of them within the last two years) said many caps were thick or large once rehydrated. Some also wrote that each piece is large even when split.
Splits and irregular shapes are fine for home cooking
13 reviews (7 of them within the last two years) said that although there are splits and irregular shapes, they are no problem for use at home. Many wrote that they know it is wakeari and buy it repeatedly for home use.
Useful in a wide range of everyday dishes
18 reviews (10 of them within the last two years) said they use it in a wide range of everyday dishes, such as simmered dishes, chawanmushi (savory steamed egg custard), takikomi gohan (seasoned mixed rice), miso soup, and stir-fries.
Dashi, aroma, and umami
10 reviews (5 of them within the last two years) said it makes good dashi (Japanese soup stock) or has aroma and umami.
Source: Rakuten customer reviews (viewed October 13, 2026)
What Reviewers Note
Some orders are finely broken, with a lot of powder and stems
5 of the 16 reviews rated 1★ or 2★ (3 of them within the last two years) said the bag contained a lot of finely crushed pieces, powder, or bits of stem (ishizuki) only. Some repeat buyers wrote that it looked worse than usual.
How to check: what the shop says makes it wakeari (discolored, split, and chipped caps, with many poorly colored shiitake included) is summarized in the “What Makes It Wakeari” row of “Basic Information” in this article.
Some orders have many thin or fully opened caps
5 of the 16 reviews rated 1★ or 2★ (1 of them within the last two years) said many were thin or had fully opened caps.
Insects appeared during storage
6 of the 16 reviews rated 1★ or 2★ said there were insects in the stored bag or in the rehydrated shiitake. All were posted between 2015 and 2018, and none were among the posts from the last two years.
How to check: the shop’s storage guidance (avoid humidity, and store in an airtight container in a dark, cold place such as a refrigerator) is summarized in the “Storage Method” row of “Basic Information” in this article.
Source: Rakuten customer reviews (viewed October 13, 2026)
Who It Suits / Who Should Be Careful
Who It Suits
- Want to use them for cooking at home even with splits, chips, or discoloration
- Can take the time to rehydrate them in water (the page says 3 to 5 hours in cold water)
- Can move them to an airtight container and store them in a dark, cold place such as a refrigerator
- Are fine with receiving it through mailbox delivery
Who Should Be Careful
- Have an allergy (the labeling is not confirmed, so ask the shop before buying or check the label on the product when it arrives)
- Want dried shiitake that are uniform in shape and color
- Want to use it as a gift or send it to another address (the page says wrapping and noshi are not available and delivery is only to the orderer’s address)
- Want to receive it on a specified date and time (the page says this cannot be specified)
Prices, stock, shipping fees, and delivery dates are subject to change. This article’s information-as-of date is October 13, 2026. Please be sure to check the listing at the link before purchasing. This article covers the single 160g size.
This article contains affiliate links (advertising). Editorial Policy
Summary
- One size, 160g. Described as commercial-use dried shiitake that includes discolored, split, and chipped caps. The number of servings is not confirmed
- Best before 1 year from the date of manufacture (bagging date). The page advises avoiding humidity and storing them in an airtight container in a dark, cold place such as a refrigerator. It says rehydrating them in cold water for 3 to 5 hours is best
- The ingredient is log-grown dried shiitake from Oita Prefecture. Allergen labeling and the manufacturer are not confirmed. The page says wrapping and noshi are not available, delivery is only to the orderer’s address, and it is delivered to your mailbox
Related Pages
This article organizes information published on various retail sites 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 13, 2026 / Sources: Rakuten Ichiba “アットマーク大分しいたけ” product page, Rakuten customer reviews, Consumer Affairs Agency, Japan, “About Allergen Labeling”
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