“北海道よつ葉バター（食塩不使用）450g” (Hokkaido Yotsuba Butter, unsalted, 450g) is a butter made by Yotsuba Milk Products (よつ葉乳業) from raw milk produced in Hokkaido, and it is sold by ママパン on Rakuten Ichiba. With a butter in a 450g size, the product name alone does not tell you how much of the best-before date will be left when it arrives, how it should be kept (it needs refrigeration), or what the allergen labeling says. This article organizes what the Rakuten Ichiba product page and the Rakuten customer reviews (“Minna no Review”) state into five points: content volume, storage method, ingredient labeling, suitability as a gift, and reviews.
What We Confirmed
- Content volume and a guide to servings
- Storage method and the best-before date display
- 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 | 北海道よつ葉バター（食塩不使用）450g (Hokkaido Yotsuba Butter, unsalted, 450g)Source: Rakuten Ichiba product page (viewed October 13, 2026). The product name includes the note “お一人様10個まで” (limit of 10 per customer), and the purchase limit may change |
|---|---|
| Name | Butter (shown as the type classification)Source: product description on the Rakuten Ichiba product page |
| Content volume | 450g x 1. We found no estimate of how many servings it makes on the product page, so this is not confirmedSource: Rakuten Ichiba product page |
| Storage method | Keep refrigerated (10°C or below)Source: product description on the Rakuten Ichiba product page |
| Best-before date | Shown on the product page. The page says that, as a guide, 30 or more days remain at the time of shipping. The date changes with each arrival of stock, so this article does not state it. How long it keeps after opening is not confirmedSource: “購入前のご確認事項” (notes to check before purchase) on the Rakuten Ichiba product page |
| Country of origin (ingredient) | Raw milk (produced in Hokkaido)Source: product description on the Rakuten Ichiba product page |
| Place of processing | Not confirmed (the manufacturer’s address is given in the “Manufacturer” row below) |
| Condition / how to eat (whether heating is needed) | We found no guidance on whether heating is needed or on how to eat it, so this is not confirmed. The page says it can be used for homemade bread and sweets and for everyday cookingSource: product description on the Rakuten Ichiba product page |
| Delivery | Shipped by either chilled delivery or frozen delivery, bundled with other items depending on what you order. If you order it together with a frozen item, it ships by frozen delivery, and the page says that in that case you can use it without problems after thawing it overnight in the refrigerator. If you want chilled delivery, the page asks you to order it separately from frozen itemsSource: product description on the Rakuten Ichiba product page |
| Manufacturer | よつ葉乳業株式会社 (Yotsuba Milk Products Co., Ltd.), 20-3 Shintori, Otofuke-cho, Kato-gun, HokkaidoSource: product description on the Rakuten Ichiba product page |
| Shop | ママパン (Rakuten Ichiba). It is the seller and is separate from the manufacturer |
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 page states the following (Source: Rakuten Ichiba product page, viewed October 13, 2026).
- Type classification: butter (バター)
- Ingredients: raw milk (produced in Hokkaido)
- Milk fat: 82.0% or more; moisture: 17.0% or less (as written in the product description)
- Nutrition facts (per 100g, approximate): energy 748kcal, protein 0.1 to 1.1g, fat 82.7g, carbohydrate 0.1 to 1.1g, salt equivalent 0 to 0.05g
- Allergen labeling: the ingredient used that falls under it is “milk (乳)”. Other allergen information is “none in particular (特になし)” (label updated September 19, 2019)
Within the product page, we found no discrepancy between the ingredients and the allergen labeling. However, the allergen labeling was last updated on September 19, 2019, and the product page also says that, depending on when the information was updated, it may differ from what is on the product label. If you have a milk allergy, or are concerned about other points of the labeling (such as shared production lines), that point is not confirmed, so ask the shop before buying or check the food information label on the product when it arrives.
Reference: Consumer Affairs Agency, Japan, “About Allergen Labeling” (viewed October 13, 2026)
Five Things to Check Before Buying
| What to check | This product | Basis |
|---|---|---|
| 1. Content volume / servings | 450g x 1. The estimate of servings is not confirmed. The product name shows a purchase limit: “お一人様10個まで” (limit of 10 per customer) | Rakuten Ichiba product page |
| 2. Storage method and shelf life | Keep refrigerated (10°C or below). The best-before date is shown on the product page, and the page says that 30 or more days remaining at shipping is the guide. How long it keeps after opening is not confirmed | Product description and “購入前のご確認事項” (notes to check before purchase) on the Rakuten Ichiba product page |
| 3. Ingredients and allergen labeling | The only ingredient is raw milk (produced in Hokkaido). The allergen labeling is milk (乳) (label updated September 19, 2019) | Product description on the Rakuten Ichiba product page |
| 4. Whether it works as a gift | We found no mention of noshi (gift wrapping label), wrapping or message cards, so this is not confirmed. There is no gift-oriented description, and the page presents it for confectionery, bread-making and cooking | Rakuten Ichiba product page. Details are in the next section |
| 5. Review trends | The Rakuten Ichiba rating is 4.74 / 5 (4,548 reviews). We read the first 60 reviews in the default sort order plus 13 ★1 reviews and 13 ★2 reviews, 86 in total (posted from 2007 to 2026, the newest in August 2026). These trends may not reflect the product’s current condition. Many posts praised how it works for bread-making and baking and its flavor, while posts noting that little time was left on the best-before date stand out among the older reviews | Rakuten customer reviews (viewed October 13, 2026) |
Suitable as a Gift?
The product page has no mention of noshi, wrapping or message cards, and all of these are not confirmed. The shop’s catchphrase describes uses for homemade bread, homemade sweets and cooking, and we found no gift-oriented description. If you are considering it as a gift, checking the following points with the seller before buying makes a mix-up less likely (Source: Rakuten Ichiba product page, viewed October 13, 2026).
- Whether noshi, wrapping and message cards are supported (not stated on the product page)
- Since it needs refrigeration, whether it arrives by chilled or frozen delivery (the page says this depends on what you order)
- Whether you can specify a date and time the recipient can receive it (not stated on the product page)
Among the reviews we read, we found no post about using it as a gift (Source: Rakuten customer reviews, viewed October 13, 2026).
What Public Reviews Say
We organized the Rakuten Ichiba product reviews by point of view. The rating figures are as of the time of viewing and will change afterward.
| Site | Rating | Count | Viewed on |
|---|---|---|---|
| Rakuten customer reviews (product page) | 4.74 / 5 | 4,548 reviews | October 13, 2026 |
Rating breakdown: 5★ 3,592 / 4★ 786 / 3★ 144 / 2★ 13 / 1★ 13 (as shown on Rakuten Ichiba, viewed October 13, 2026)
What we read: the first 60 reviews in Rakuten’s default order (posted May 2009 to August 2026; latest August 2026), plus 13 filtered to 1★ (posted October 2007 to March 2020) and 13 filtered to 2★ (posted June 2011 to October 2024), 86 in total. These are trends within what we read and may not reflect the product’s current condition.
What Reviewers Praise
How it works for bread and sweets
About 40 of the 60 reviews in the default sort order said they use it for bread-making, baked sweets or cooking. Bread was the most common use, and some posts mention buying it repeatedly.
Flavor and aroma
16 posts mentioned the milk flavor or the aroma of the baked goods. These include posts saying the flavor differs from other butters or substitutes.
The 450g size
17 to 20 posts (the range depends on how they are counted) said it is a size that is hard to find in stores, or that it is helpful to be able to buy in bulk because they use it often.
Divided into portions for storage
17 posts said they cut it into portions after it arrived and keep it on hand in the freezer or refrigerator. This is how the reviewers use it and is not the shop’s storage guidance. For the storage method, please see the row in “Basic Information.”
Source: Rakuten customer reviews (viewed October 13, 2026)
What Reviewers Note
Low-rated posts are mostly older ones. The 13 ★1 reviews were posted between 2007 and 2020, and the only post from the last 2 years (October 2024 onward) was one ★2 review.
Items sometimes arrive with a short best-before date
10 of the 26 ★1 and ★2 reviews (6 ★1 and 4 ★2) wrote that the best-before date on the item that arrived had only about a month left, or that they worried whether they could use it all. Many of these were posted between 2013 and 2016.
How to check: the best-before date display and the shipping guide are summarized in the “Best-before date” row of “Basic Information” in this article.
Condition on arrival
5 of the 26 ★1 and ★2 reviews (3 ★1 and 2 ★2) wrote that the butter that arrived was soft, that the wrapping was torn, that it was crushed, or that part of it had turned a darker color.
How to check: the delivery method is summarized in the “Delivery” row of “Basic Information” in this article.
Shipping fees and price
4 of the 13 ★2 reviews mentioned shipping fees or price.
Source: Rakuten customer reviews (viewed October 13, 2026)
Who It Suits / Who Should Be Careful
Who It Suits
- You want unsalted butter for bread, sweets and cooking
- You use 450g of butter often (a common way of using it in reviews)
- You can store it refrigerated (10°C or below)
- You are willing to cut it into portions after it arrives (a common way of using it in reviews)
Who Should Be Careful
- You have a milk allergy (the allergen labeling is milk; updated September 19, 2019)
- You want to know the remaining best-before date in advance (check the product page’s display)
- You want to use it as a gift with noshi and wrapping (not stated)
- You are unsure you can use up 450g at once
- You are looking on Amazon (we could not verify whether it is the same product)
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 contains affiliate links (advertising). Editorial Policy
Summary
- A 450g x 1 unsalted butter whose only ingredient is raw milk (produced in Hokkaido). The manufacturer is Yotsuba Milk Products (よつ葉乳業), and ママパン is the seller. The estimate of servings is not confirmed
- Keep refrigerated (10°C or below). The best-before date is shown on the product page, with 30 or more days remaining at shipping given as the guide. In reviews, older posts pointed out that little time was left on the best-before date
- The allergen labeling is milk, updated September 19, 2019. There is no mention of noshi or wrapping, so if you plan to use it as a gift, check with the seller before buying
Related Pages
This article organizes information publicly available on the Rakuten Ichiba product page and Rakuten customer reviews. Product information such as amount, storage method, and ingredients may change. Please check the seller’s labeling 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 “ママパン” product page, Rakuten customer reviews, Consumer Affairs Agency, Japan, “About Allergen Labeling”
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