Tosazu: Bonito Flavor Sanbaizu Vinegar from Mizkan

Tosa (土佐) is the ancient name of Kochi (高知), which is known as Japan’s largest consumer of Katsuo (鰹: bonito).

Accordingly, the prefecture boasts its specialties using bonito, and what I introduce here, Tosazu (土佐酢), is one of the representatives.

Tosazu (土佐酢) from Mizkan

Mizkan Tosazu

Tosazu (土佐酢) is the Tosa-style Sanbaizu vinegar blended with Katsuo/bonito dashi stock.

Although it is a local specialty of Kochi (far away from Niigata), we effortlessly get the seasoning at nearby supermarkets thanks to Mizkan. 

Tosazu Bonito Flavor Sanbaizu Vinegar

The Mizkan Tosazu (150 ml) is priced at 151 yen and is expensive compared to the most commonly used cereal vinegar (194 yen/500 ml).

But unlike the latter, the former is ready to use as it is and is versatile, as seen in the recipes offered by the maker.

Tofu with Tosazu Bonito Sanbaizu Vinegar

In place of basic Sanbaizu, you can substitute the Tosazu when preparing Sunomono vinegared dishes. 

As for me, I love to eat Hiyayakko (冷奴: cold tofu) with that umami-packed vinegar sauce, which also goes perfectly with Yu-Dofu (湯豆腐: boiled tofu).

Ingredients/Nutrition Facts

Mizkan Tosazu Vinegar Ingredients

Brewed vinegar, High-fructose corn syrup, Soy sauce (including Wheat and Soybean), Salt, Bonito stock, Seafood extract, Citric acid, Seasoning (including Amino acid)

Nutritional Values

Mizkan Tosazu Vinegar Nutrition Facts Label

Nutritional Values per 15 ml
Calories 13 kcal
Protein 0.2 g
Fat 0 g
Carbohydrates 3.0 g
Salt Equivalents 0.53 g


Hi, I'm Tomo, a Japanese blogger living in Niigata Prefecture, Japan. For the purpose of enriching your life, I would like to introduce things about Japan on this blog, especially unique Japanese products, cooking recipes, cultures, and facts and trivia.

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