Try this Oriental Dressing recipe, or contribute your own.
Rice vinegar drives this profile with sharp, clean acidity that demands careful handling. Unbalanced blending leaves harsh vinegar edges exposed and overpowers the sharp pungency of prepared mustard. Cooks frequently commit errors by dumping all ingredients together at once without considering solubility. Sugar crystals dissolve slowly in cold acid. Whisk the sugar into the rice vinegar for a full 60 seconds until the granules vanish completely before adding the soy sauce and mustard. Prepared mustard acts as a weak secondary binder here due to its natural mucilage, but this dressing will naturally separate upon standing. Whisk the mixture vigorously in a glass bowl or shake it in a sealed jar for 15 seconds immediately prior to pouring over greens. Store leftover dressing in a sealed glass container in the refrigerator for up to five days. Cold storage mutes the pungent volatiles in the mustard. Allow chilled dressing to sit at room temperature for 15 minutes before tossing with crunchy vegetables like shredded cabbage or crisp apples to restore full aromatic intensity.