Yukishio (Snow Salt), powder type: every ingredient on the label
宮古島の雪塩 雪塩（パウダータイプ）
The only ingredient is seawater from Miyakojima. Seawater concentrated through a reverse osmosis membrane is sprayed onto a heated metal plate and crystallized all at once, giving a salt as fine as powder.
Checking the ingredient list against the additives you flagged.
Choose additives to flag →The label on the back
| 名称Name | 塩 |
|---|---|
| 原材料名Ingredient list | |
| 内容量Net contents | 120g |
| 製造者Manufacturer | 株式会社宮古島の雪塩 沖縄県宮古島市平良字久貝870-1 |
| 製造所Factory | 沖縄県宮古島市平良字狩俣191 |
| 工程Process | 逆浸透膜、加熱ドラム |
| Energy エネルギー | 0kcal |
| Protein, fat, carbohydrates たんぱく質、脂質、炭水化物 | 0g |
| Salt equivalent 食塩相当量 | 72.6g |
| Magnesium マグネシウム | 3310mg |
| Potassium カリウム | 1000mg |
| Calcium カルシウム | 832mg |
| Iron 鉄 | 0.14mg |
Copied from the package as of the date checked. The label is shown in Japanese as printed; tap an ingredient to see its English name and role. The links in the table below lead to our Ingredients A–Z and food additive database. There is no best-before date. The package says “お塩は長期保存が可能なため、賞味期限の表記は省略しています” (because salt can be stored for a long time, the best-before date is omitted). Under the Food Labeling Standards, salt is a food for which the best-before date may be omitted. Because it is as fine as powder, it clumps easily in humidity, and the package recommends storing it in the refrigerator after opening. According to the package, a level tablespoon holds about 5 g of Yukishio against about 17 g of ordinary salt, so by eye you use about 3 times the volume to get the right amount.
Ingredients, one by one
| On the label | Type | Role | Notes |
|---|---|---|---|
| 海水（宮古島）seawater | Ingredient | Source of the salt (the only ingredient) | The package explains that the raw material is seawater that seeped underground through coral limestone. Under the industry's fair competition code, salt labels have a set field for the production method, and this product reads “海水（宮古島）” (seawater (Miyakojima)) and “工程：逆浸透膜、加熱ドラム” (process: reverse osmosis membrane, heated drum). Reverse osmosis membrane is a step that concentrates seawater through a membrane; heated drum is a step that sprays seawater or brine onto a heated metal plate to crystallize it, which produces fine-grained salt (glossary of the Edible Salt Fair Trade Council). |
Not found in the ingredient list
This is not the maker's “not used” claim. These are things often seen in similar products that we checked are not written in this product's ingredient list. Additives carried over from ingredients may not be declared, so this does not mean they are absent (about additives not written on labels).
Next to a typical product
海水（宮古島）
天日塩（メキシコ）／炭酸マグネシウム
The process is “溶解、立釜、乾燥、混合” (dissolving, vacuum pan, drying, mixing). Imported solar salt is dissolved in water, boiled down again in a closed pan (tatekama), dried, and mixed with magnesium carbonate to make it harder to cake. It is at least 99.5% sodium chloride. Note that under the fair competition code for salt, labeling salt simply as “無添加” (additive-free) or as “ミネラル豊富” (rich in minerals) is not permitted.
Good points and concerns
+Good points
- The only ingredient is seawater; 0 food additives
- No anti-caking additive (such as magnesium carbonate) is added
- The amounts of magnesium, potassium, calcium and iron are given as values per 100 g
−Concerns
- ¥864 for 120 g (¥720 per 100 g). Much more expensive than ordinary table salt
- As fine as powder, so it clumps easily in humidity (also stated on the package)
- The grains are fine and light, so a tablespoon weighs about one third of ordinary salt. If you measure it the way you do your usual salt, the saltiness will be different
Related articles
Sources
- Yukishio powder type 120 g | Miyakojima no Yukishio (宮古島の雪塩) official online store
- Yukishio | Miyakojima no Yukishio Co., Ltd. (株式会社宮古島の雪塩) (product introduction)
- Our commitment to Yukishio | Miyakojima no Yukishio Co., Ltd. (株式会社宮古島の雪塩)
- Glossary (reverse osmosis membrane, heated drum, etc.) | Edible Salt Fair Trade Council
- Fair competition code and enforcement rules on labeling of edible salt | Edible Salt Fair Trade Council
- Refined salt | Salt Industry Center of Japan (公益財団法人塩事業センター)
- Food Labeling Standards Q&A (omitting the date marking and storage method for salt) | Consumer Affairs Agency
- Label on the back of the package (checked 2026-09-30)
This page is a translation of our Japanese page; if they differ, the Japanese page is the reference.
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