Oigatsuo Tsuyu 2x (bonito-boosted noodle soup base, 2x concentrate), 500 ml: every ingredient on the label
ミツカン 追いがつおつゆ2倍 500ml
A 2x concentrated tsuyu (soup base) from Mizkan that adds ground dried bonito flakes to two dashi (soup stocks), a “旨みだし” (umami dashi) and a “香りだし” (aroma dashi) (as described on the official site). It has 12 ingredients, and 2 of them are food additives, written after the “／” (slash): alcohol and seasoning (amino acids, etc.).
Checking the ingredient list against the additives you flagged.
Choose additives to flag →Labeling as shown by the maker
This label was copied from the maker's official product page (checked 2026-10-02). Package labels can change, so please check the actual label when you buy.
| 名称Name | つゆ（希釈用） |
|---|---|
| 原材料名Ingredients | 、、、、、、、、、／、、（小麦・大豆を含む） |
| 内容量Net contents | 500ml（濃縮2倍タイプ） |
| 賞味期限Best before | 賞味期間540日（公式ページの表示） |
| 保存方法Storage | |
| 製造者Manufacturer |
Allergens: contains wheat and soybeans
| Energy エネルギー | 66kcal |
| Protein たんぱく質 | 1.8g |
| Fat 脂質 | 0.0g |
| Carbohydrate 炭水化物 | 13.3g |
| Sugars 糖質 | 13.3g |
| Dietary fiber 食物繊維 | 0.0g |
| Salt equivalent 食塩相当量 | 5.7g |
| Sodium ナトリウム | 2234mg |
| Potassium カリウム | 72mg |
| Phosphorus リン | 34mg |
Copied from the official site 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. The ingredient list and nutrition facts were transcribed from the product page on the Mizkan official site (not from a photo of the package). The ingredient list on the official page is the same for 500 ml and 1 L. The allergens are written for each ingredient within the ingredient list, as “しょうゆ（小麦・大豆を含む）” (soy sauce (contains wheat and soybeans)). Mizkan explains on the official page that it labels all 28 allergen items it uses on the product label. The nutrition values are per 100 g of edible portion of the 2x concentrated tsuyu itself, not of the diluted liquid. The name, storage method and manufacturer are not given on the official page.
Ingredients, one by one
| On the label | Type | Role | Notes |
|---|---|---|---|
| しょうゆ（小麦・大豆を含む）（国内製造）soy sauce (contains wheat and soybeans) (made in Japan) | Ingredient | Saltiness and umami | Ingredients are listed in order of weight, so soy sauce is the largest. “（国内製造）” (made in Japan) is a country-of-origin label meaning the soy sauce was made in Japan (it is not the origin of the soybeans or wheat). “（小麦・大豆を含む）” (contains wheat and soybeans) is an individual allergen label. |
| 果糖ぶどう糖液糖high-fructose corn syrup | Ingredient | Sweetness | A liquid sugar made by breaking down starch, a mix of fructose and glucose. It is treated as a food, so it is not in the additive section. |
| 食塩salt | Ingredient | Saltiness | — |
| 砂糖sugar | Ingredient | Sweetness | — |
| かつおぶし（粗砕、粉砕）dried bonito flakes (coarsely crushed, ground) | Ingredient | Dashi aroma and umami | Coarsely crushed dried bonito flakes and finely ground dried bonito flakes. The official site explains this as “きめ細やかに挽いたかつお節を加えました” (finely ground dried bonito flakes have been added). |
| 醸造酢brewed vinegar | Ingredient | Tightening the flavor | Vinegar made by fermenting grains, fruit and so on. The official page does not say what the raw materials are. |
| 魚介エキスseafood extract | Ingredient | Umami | A concentrated extract made by simmering seafood. The official page does not say which seafood. |
| 酵母エキスyeast extract | Ingredient | Umami | The contents of yeast, extracted. It is treated as a food, not a food additive. It is different from the additive “調味料（アミノ酸等）” (seasoning (amino acids, etc.)). |
| 濃縮かつおぶしだしconcentrated dried bonito dashi | Ingredient | Bonito umami | A concentrated stock made from dried bonito flakes. |
| こんぶエキスkombu (kelp) extract | Ingredient | Umami | A concentrated extract made by simmering kombu. |
| アルコールalcohol | Food additive | Keeps longer | Edible alcohol. In this product it is written after the “／” (in the additive section). Alcohol (shusei) is written either as a food ingredient or as an additive, depending on how it is used and who labels it. The official page does not say why it is added. |
| 調味料（アミノ酸等）seasoning (amino acids, etc.) | Food additive | Umami | A food additive that adds umami, such as monosodium glutamate. Under the labeling rules, umami additives may be written with the group name “調味料” (seasoning), and “（アミノ酸等）” (amino acids, etc.) is added when amino acids are the largest part. The label does not tell you what is included or how many kinds. |
Similar products with fewer food additives
Products on the same shelf that we have read, with fewer food additives than this one (2). Shown as a difference in labeling, not a judgment.
Natural dashi stock pack, ryotei (high-end restaurant) style
鰹節（国内製造）、いわし煮干、昆布、椎茸、あじ煮干
Takumi-aji pack, Kyoto-style tuna dashi
まぐろ節（国内製造）、昆布
Dashi pack “Junihitoe” (twelve-layered robe)
いわしふし（国内製造）、いわし煮干、とびうお煮干、かつおふし、うるめふし、そうだかつおふし、昆布、乾しいたけ、干しえび、むろあじふし、まぐろふし
Good points and concerns
+Good points
- 12 ingredients, and 2 food additives (alcohol, and “調味料（アミノ酸等）” (seasoning (amino acids, etc.)) written with a group name)
- The dashi ingredients written are dried bonito flakes (coarsely crushed, ground), concentrated dried bonito dashi, kombu extract and seafood extract
- Suggested retail price of ¥444 for 500 ml (about ¥89 per 100 ml)
−Concerns
- After soy sauce, the next largest ingredient is high-fructose corn syrup
- The official page does not say what fish is in the seafood extract. “調味料（アミノ酸等）” (seasoning (amino acids, etc.)) is a group name, so what is included is unknown
- The salt equivalent is 5.7 g per 100 g as 2x concentrate
Related articles
Sources
- Oigatsuo Tsuyu 2x | Product information | Mizkan Group
- Knowledge on food additive labeling for correctly understanding food labels | Consumer Affairs Agency
- Labeling on the maker's official site (checked 2026-10-02)
This page is a translation of our Japanese page; if they differ, the Japanese page is the reference.
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