Seasoned rice vinegar is plain (or “natural”) rice vinegar to which sugar and salt are added. It’s an easy way to boost the sweet, salty, and tangy elements of a dish all at once, as in the Pan-Seared Salmon with Plum Salad.
Look for seasoned rice vinegar in the Asian section of supermarkets or in Japanese specialty stores. Some brands contain high-fructose corn syrup, so if that’s of concern to you, be sure to check the label. You may also want to avoid varieties with additional flavors, like roasted garlic or basil. If you want these flavors in your dish, too, you’re better off adding them fresh yourself.
Make your own seasoned rice vinegar
If you already have some plain rice vinegar in the pantry and would rather not buy a separate bottle of seasoned vinegar, just combine 1/4 cup of the plain rice vinegar with 4 teaspoons sugar and 1/2 teaspoon kosher salt.